As stated, the Tributary, River, and River system are in order of largest to smallest.
What is the short definition of a river?A river is a part of the ocean that resembles a ribbon and flows downward under the influence of gravity. A river may be both large and deep or it may be only shallow enough to wade over. A stream, watercourse, or brook is a streaming water source that is lower than a river.
What is a river metaphor?The river flows through the landscape like a silver ribbon. The fast flowing river plunders everything in its path. The river is a seal that is attempting to return toward the tidal ways. A grizzly bear is the river, leaping to get its prey.
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The complete question is-
Place the following in order from smallest to largest.
River, River system, Tributary.
(100 POINTS + BRAINLIEST) i don't know which subject this belongs to but this is an earth science class!!!
Tell the story of the life cycle of a star the size of our sun, Be sure to include all stages from "pre-birth" to death.
Describe the differences between our sun's life cycle to a star who is at least 5 times bigger than our sun.
The life cycle of a star the size of our sun starts with a nebula, a huge cloud of dust and gas. The gravity of the nebula compresses the cloud until the atoms fuse together, creating a star. This stage is known as pre-birth.
Next, the star enters a main sequence phase, where it shines brightly for millions of years, powered by nuclear fusion.
Eventually the star will slowly run out of hydrogen and the fusion process will become less and less efficient. The star will expand and become what is known as a red giant. This marks the end of the main sequence phase.
After this point, the star expels its outer layers, leaving behind a small, hot core called a white dwarf. It will continue to cool down until it becomes a black dwarf.
If the star is at least 5 times bigger than our sun, it will enter a different life cycle. After the red giant phase, the star will undergo a supernova explosion, which will spew dust and gas into the surrounding areas. These remainders will later form new stars, planets, and other cosmic bodies. What's left of the star will become a neutron star or a black hole.
Normal text Calibri
25) Look at the way the contour lines point or bend on the topographic map below. Match the blanks on
the map below using the terms "Upstream" or "Downstream" based on the direction the stream is
flowing.
Zo
1?
2.?
In the given bend on the topographic map, 1. is Downstream and 2. is Upstream.
What is Upstream and Downstream of the river?The stream can be described as the moving water in a river is called a stream. Upstream can be described as if the water is flowing in the opposite direction to the stream, it is known as upstream.
Downstream can be described as flowing along the direction of the stream, it is known as downstream.
Still water can be described as under this circumstance the water is stationary and the speed of the water is equal to zero.
All rivers flow downhill from higher elevations to lower elevations and perpendicular to the contour line. As a rule of thumb, the V-shaped contour is representing upstream.
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What happens as you move down and to the left on the periodic table?
Travelling from left to right through a period of such a periodic table reduces the size of both atom.
Traveling from left to right inside a period of such periodic table causes the size of the atom to shrink. The number of protons and the positive nuclear energy both rise with such an increasing in the atomic number. The diameter of the atom shrinks as the nucleus draws the outermost electron.
Since they are eager to give up electrons and form cations, the substances on the left column of the periodic table possess low ionization energies.
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A nurse is caring for a client who has a serum potassium level of 3.1 mEq/L. Which of the following actions should the nurse take first?
A) Obtain an ECG.
B) Administer oral potassium
C) Encourage potassium-rich foods
D) Monitor I & O
To solve this we must be knowing each and every concept related to potassium level. Therefore, the correct option is option A that is Obtain an ECG.
What is potassium level?This condition is known as hyperkalemia, or excessive potassium. The Mayo Clinic states that the potassium level in blood should be between 3.6 to 5.2 millimoles a liter (mmol/L).
Critically high potassium levels are those over 5.5 mmol/L, while levels above 6 mmol/L could be lethal. A nurse is caring for a client who has a serum potassium level of 3.1 mEq/L. She should Obtain an ECG.
Therefore, the correct option is option A that is Obtain an ECG.
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What room in a house is similar to the chloroplasts in a cell
Before we use our imaginations to try and think of a fitting room, let's take a look at what a chloroplast is.
A chloroplast is the organelle in plant-based cells responsible for energy production. Through photosynthesis (you've probably heard of this before!), they use sunlight to create energy for the plant to function.
Since the chloroplast is the energy-maker for the cell, we need to imagine a room in a house that does something like this. There's a couple things that come to my mind. Firstly, although they don't really count as rooms, something like solar panels would probably make the most sense here. Since the answer asks for a room, though, solar panels don't work.
Maybe a kitchen? The kitchen is the room where food is created, supplying energy to all the inhabitants of a house.
I hope this helped! Learning about the components of cells is a little complicated at the start, but it's definitely a very exciting topic that only gets more and more interesting the deeper you delve into it.
- breezy ツ
PLEASE HELP SOON!
What kind of reaction occurs in an electrolytic cell? What characterizes its voltage?
I know a redox reaction occurs in electrolytic cells, but am confused about the second part, please help!
In an electrolytic cell, an oxidation-reduction reaction occurs. This type of reaction involves the transfer of electrons from one species to another.
The voltage of an electrolytic cell is typically greater than the voltage of a galvanic cell and is determined by the reactants and the reaction conditions.
In an electrolytic cell, a chemical reaction is driven by an external electrical current. This current causes electrons to flow between two electrodes, typically a cathode and an anode. At the cathode, electrons are gained, leading to a reduction reaction, while at the anode, electrons are lost, leading to an oxidation reaction.
The voltage of an electrolytic cell is typically greater than the voltage of a galvanic cell, and is determined by the reactants and the reaction conditions. The voltage must be high enough to provide the energy needed to drive the reaction, and can be adjusted by changing the current. The reaction rate of an electrolytic cell can also be controlled by varying the current.
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What is the outcome when the arrangement of atoms changes in a substance?
When the arrangement of atoms changes in a substance, the properties of the substance can change as well. The different arrangements of atoms can lead to different chemical and physical properties.
For example, if the atoms of a substance are rearranged to form a new compound, the new compound will have different chemical properties than the original substance. A new compound may have a different color, odor, reactivity, or melting point than the original substance.
Changing the arrangement of atoms without changing the chemical composition can change the physical properties. For example, a crystalline solid has atoms or molecules arranged in a regular, repeating pattern. This arrangement gives the material unique properties such as density, melting point, and hardness. If the arrangement of atoms and molecules changes, the properties of solids can also change.
In summary, when the arrangement of atoms in a substance changes, the properties of the substance can also change. Different arrangements of atoms have different chemical and physical properties.
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State what is meant by the term polarised (2 marks)
Explanation:
use to describe something that is complete opposite
3. Magnesium is a metal.
a. Describe the structure and bonding in magnesium.
b. Why can magnesium conduct electricity when solid?
c. Why is magnesium malleable?
Yes, magnesium is a metallic element and is a member of the alkaline earth metals group.
What is Magnesium?
Magnesium is a chemical element with the symbol Mg and atomic number 12. It is a silvery-white, highly reactive metal that is essential for many biological processes. Magnesium is the eighth most abundant element in the Earth's crust and the fourth most abundant element in the human body.
It is an important component of many enzymes, proteins, and other molecules. Magnesium is found naturally in many foods, including green vegetables, nuts, and grains. Magnesium plays a role in maintaining normal muscle and nerve function, keeping a healthy immune system, regulating blood sugar levels, and helping to form strong bones.
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What volume of oxygen is needed to completely react with 171.9 g of S8 at STP?
S8(s) +1202(g) →8S03(1)
All chan
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, the volume of oxygen needed to completely react with 171.9 g of S8 at STP is 180.09L.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
S[tex]_8[/tex](s) +12O[tex]_2[/tex](g) →8SO[tex]_3[/tex](l)
171.9 g of S8
mole of S[tex]_8[/tex]= 171.9 g/ 256.52g/mol
=0.67mol
The mole of oxygen = 12×0.67
= 8.04mol
volume of oxygen= 22.4× 8.04
=180.09L
Therefore, the volume of oxygen needed to completely react with 171.9 g of S8 at STP is 180.09L.
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A baketball ha a momentum of 6. 0 kg m/ outh and a ma of 0. 15 kg what i the baketball velocity
The basketball velocity is 40 m/s.
What is velocity?A vector quantity with both size and direction is velocity. In respect to time, it is the rate with which a displacement changes. Using the formula velocity = displacement/time, velocity may be computed. It is a way to gauge how quickly something is moving in a certain direction. Acceleration, or the rate at which an object's velocity changes, is closely related with velocity. Being a vector quantity, velocity has both a direction and a magnitude. An object must move at the a constant speed and in the same direction in order to maintain a constant velocity.
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The overall charge of an atom or ion is ________ if the number of electrons is ________ than the number of protons.
The overall charge of an atom or ion is negative if the number of electrons is greater than the number of protons.
What is electron?A subatomic particle with a negative charge is called an electron. It is found outside the nucleus of an atom and is one of the main constituents of matter. Electrons are responsible for the chemical properties of atoms and thus play an important role in chemical reactions. Electrons have low mass and move around the nucleus at relativistic speeds. They are also responsible for the electrical and magnetic properties of atoms, and for the transmission of light and other forms of energy. Electrons can also interact with other particles and form complex structures, such as molecules.
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The measured electric mobilities of K+ (aq) and Cl– (aq) at a KCl concentration of 0.30 mol L–1 are respectively, 5.9 10 –4 and 6.14 10–4 cm2 V–1 s–1 at 30 OC. Calculate the transport numbers and molar ionic conductivity of K+ and Cl–. What is the molar conductivity of KCl at this concentration? Assume complete ionisation of KCl.
The molar conductivity of KCl at this concentration and transport numbers and molar ionic conductivity of K+ and Cl– are
Λm =1.806×10−4 t(K+)=4.90033223×10^−9 t(Cl-) =5.09966777×10^−9What is the molar conductivity of KCl at this concentration?Generally, The transport number, t, of an ion can be calculated using the equation: t = (μi x Ci) / Λm,
where
tμi is the electric mobility of the ion, Ci is the concentration of the ion, and Λm ishe molar conductivity of the electrolyte solution.Given that the electric mobility of
K+ is 5.9 x 10^-4 cm^2 V^-1 s^-1, the electric mobility of Cl- is 6.14 x 10^-4 cm^2 V^-1 s^-1, and the concentration of KCl is 0.30 mol L^-1, we can calculate the transport numbers as:
t(K+) = (5.9 x 10^-4 cm^2 V^-1 s^-1 x [K+]) / Λm t(Cl-)
= (6.14 x 10^-4 cm^2 V^-1 s^-1 x [Cl-]) / Λm
where
[K+] and [Cl-] are the molar concentrations of K+ and Cl- ions, respectively.
The molar ionic conductivity, Λi, of an ion can be calculated using the equation: Λi = μi x Ci,
where
μi is the electric mobility of the ion and Ci is the concentration of the ion.Given that the electric mobility of K+ is 5.9 x 10^-4 cm^2 V^-1 s^-1 and the concentration of K+ is 0.15 mol L^-1, the molar ionic conductivity of K+ is:
Λ(K+) = 5.9 x 10^-4 cm^2 V^-1 s^-1 x 0.15 mol L^-1
Λ(K+) =8.85×10−5
Similarly, given that the electric mobility of
Cl- is 6.14 x 10^-4 cm^2 V^-1 s^-1 and the concentration of Cl- is 0.15 mol L^-1, the molar ionic conductivity of Cl- is:
Λ(Cl-) = 6.14 x 10^-4 cm^2 V^-1 s^-1 x 0.15 mol L^-1
Λ(Cl-) =9.21×10^−5
Finally, the molar conductivity of KCl can be calculated as:
Λm = Λ(K+) + Λ(Cl-)
=9.21×10^−5+8.85×10^−5
Λm =1.806×10−4
The transport numbers of K+ and Cl- can be calculated by
t(K+) = Λ(K+) / Λm and
t(Cl-) = Λ(Cl-) / Λm respectively.
t(K+) = 8.85×10−5/1.806×10−4 '
t(K+)=4.90033223×10^−9
and
t(Cl-) =9.21×10^−5/1.806×10−4
t(Cl-) =5.09966777×10^−9
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Is 1g equal to 1 mol?
Are CO2 and O2 inversely related?
Yes carbon dioxide and oxygen are inversely related to each other.
Bohr effect is a result of the effect of carbon dioxide has on hemoglobin affinity for oxygen. Bohr's effect describes the hemoglobin's lower affinity for oxygen secondary to increases in the partial pressure of the carbon dioxide and decreases the pH of blood. This lower affinity, in turn, enhances the unloading of oxygen into the tissues to meet the oxygen demand of the tissue.
Thus, the relationship between CO₂ and hemoglobin affinity for oxygen can be described as an inverse relationship meaning when one goes one way, and the other goes the other way.
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The isotope of iodine with mass number 128 undergoes beta decay with a half-life of 25.00 minutes. The balanced nuclear reaction for this process is:
Beta decay occurs with a half-life of 25 minutes for the iodine isotope with mass number 128. For this procedure, 3→Te + iB is the balanced nuclear reaction.
Isotopes are two or more atom types that share the same atomic number (number of protons in their nuclei) and position in the periodic table (and, therefore, belong to the same chemical element). However, isotopes have different nucleon numbers (mass numbers) because they have varying numbers of neutrons in their nuclei. All isotopes of a given element have nearly identical chemical properties, but they differ in terms of atomic mass and physical characteristics.
The word "isotope" is derived from the Greek words isos, which means "equal," and topos, which means "place," meaning "the same location." The name refers to the fact that different isotopes of the same element occupy the same spot on the periodic table.
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A sample of magnesium metal reacts with 45.0 mL of 3.0 M solution of hydrochloric acid. How many moles of HCl are reacting
moles of HCl are reacting is [tex]135\times10^{-3}[/tex]
In the International System of Units, the mole is used to measure material quantity. The number of a substance's elementary entities that are present in an object or sample depends on the amount of that substance. A solute's molar concentration is used to represent how much of a solute there is per unit volume of a solution or how much of a chemical species there is in a solution.
Magnesium reacts with hydrochloric acid to generate a salt of magnesium chloride and release hydrogen gas.
Mg(s) +HCl(aq) [tex]\rightarrow[/tex] [tex]MgCl_{2}[/tex](aq)+[tex]H_{2}[/tex](g)
molarity =[tex]\frac{moles of solute}{volume of solution \:(l)}[/tex]
molarity of Mg is 3.0M volume of solution is 45ml
now, 3M=[tex]\frac{moles of solute}{45\times 10^{-3} \:(l)}[/tex]
moles of mg = 135 millimoles.
now according to the reaction by using stoichiometry
moles of Mg = moles of HCl
moles of HCl =135 millimoles =[tex]135\times10^{-3}[/tex]
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what kind of information does this map show
Answer: C(Elevation of surface features)
Explanation: It's a topographical Map which displays lines of Equal Elevation.
Which one of the following substances does not exist in the indicated solid type? Explain.
a. graphite - network
b. Na - metallic
c. SiO
2
- molecular
d. NaCl - ionic
e. diamond - network
The following substances does not exist in the indicated solid type : c.) SiO₂- molecular.
What type of solid is Si02?SiO2 is a covalent solid and the solid state of silicon dioxide (SiO2) is a covalent crystal with sharing of valence electrons between the silicon atom and oxygen atoms.
Silicon dioxide is a silicon oxide made of linear triatomic molecules in which silicon atom is covalently bonded to two oxygens. Silicon dioxide which is often called silica is the main compound found in sand.
Silicon dioxide is not soluble in water as the interaction between SiO2 and water molecules is not sufficient to overcome the strong and extensive covalent bonds in giant molecule.
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1. isostasy subduction 2. deepest ocean depths fjord 3. drowned glaciated valley plate tectonics 4. theory of crustal structure trench 5. oceanic plate going down buoyancy
The isostasy is relates to the buoyancy , the deepest oceans depths relates to the trench, the theory of the crustal structure relates to the plate tectonics.
The match the following for the given options are given below as follows :
1 ) isostasy buoyancy
2) deepest ocean depths trench
3) drowned glaciated valley fjord
4) theory of crustal structure tectonic plates
5) oceanic plate going down subduction
The above are the correct order for the given following relations. these given options are related to the earth movement. like isostasy is the rising or the settling of the part of the earth's lithosphere.
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For which d orbital(s) do the lobes point directly at the ligands in a square-planar crystal field? Check all that apply.
O dzy
O dz2
O dzz
O dzy y^2
O dyz
submit
The dz2 and the dx2-y2 orbitals have lobes that point directly at the ligands in a square-planar crystal field in d orbitals.
The d orbitals are a set of atomic orbitals found in the second energy level (n = 2) of an atom. They have a higher energy than the s and p orbitals in the first energy level (n = 1), and are represented by the letters d, dx, dy, dz and dxy, dxz and dyz.The d orbitals are composed of four orbitals which are degenerate (having the same energy) in an isolated atom. But when an atom is in a compound, the d-orbitals split into different energy levels due to the influence of the electrostatic forces of the neighboring atoms. This is called the crystal field splitting, which depends on the symmetry of the crystal and the coordination number of the central atom.
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10. What would the new concentration be, in percentage, of 1.5 ml of a 10% solution that has been increased with normal saline to 3.0 ml
The 1.5 ml of a 10% solution that was made into a 3.0 ml solution by adding normal saline now has a new concentration of 5%.
The amount of material in a certain area is referred to as concentration in chemistry. Another definition states that concentration is the ratio of a solution's solute to its entire solution or solvent. Mass per unit volume is a common way to express concentration. However, moles or units of volume can also be used to express the solute concentration. Concentration could be per unit mass instead of volume. Concentration can be computed for any mixture, despite often being used with chemical solutions.
By mathematically dividing the mass, moles, or volume of the solute by the mass, moles, or volume of the solution, one may calculate the concentration (or, less commonly, the solvent).
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what are the two quantities in this module for which we will develop unit factors to do dimensional analysis with chemical substances?
Mass (often measured in grams) & volume are the two characteristics in this module through which we will create unit components to do statistical approach using different chemicals .
What exactly is a chemical substance?Chemical substances come in three different forms: elements, compounds, and mixtures. Elements are basically chemicals that don't contain any other substances. In this sense, elements are the fundamental constituents of chemical composition.
How should chemicals be categorized?The component can be an isotope or a combination if it is pure. If a substance can be divided into its component elements, it is a compound. If a substance is not chemically pure, it is either a heterogeneous mixture or even a heterogeneous mixture. If the composition remains the same throughout, the combination is homogeneous.
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according to the department of transportation hazardous materials are defined as
Hazardous materials are substances or chemicals that pose a health hazard, a physical hazard, or harm to the environment.
What is hazardous materials?Weapons of mass destruction, as well as other matter or energy that have the potential to do harm to people, the environment, and property, when discharged.The EPA divides hazardous waste into three categories: listed, characteristic, and mixed radiological waste. Although there are numerous subclasses within each of these groups, the following are the broad groupings.Any cause of potential danger, harm, or negative health impacts on something or someone is a hazard. Basically, a risk is the potential for harm or a negative outcome (for example, to people as health effects, to organisations as property or equipment losses, or to the environment).A hazard is a potential source or circumstance that could cause harm to people or their health, damage to property, or harm to the environment.
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What happens when ocean water that is more dense (colder or saltier) is mixed with water that is less dense (warmer or less salty)?
please make it sound like i wrote it :(
When ocean water that is more dense (colder or saltier) is mixed with water that is less dense (warmer or less salty), the denser water will sink to the bottom and the less dense water will rise to the top. This is known as stratification, and it helps to create distinct layers in the ocean.
This stratification can create an environment that is more conducive to life, as it allows different types of organisms to inhabit different layers of the ocean.
The different layers of the ocean created by stratification play a significant role in the global climate system. Colder, denser waters are usually found at the bottom of the ocean, while warmer, less dense waters are found near the surface.
This temperature difference creates a natural convection system that drives currents throughout the ocean, which helps to regulate temperatures on a global scale. Additionally, stratification can also affect the amount of oxygen in the ocean.
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Three elements in the same period are listed in order of decreasing atomic radius. Which of the following is an appropriate explanation for the non-metal in the list having the smallest atomic radius
The appropriate explanation for the non-metal is that the higher effective nuclear charge less will be the atomic radius.
Atomic radius typically decreases during a period from left to right. There are a few little outliers, such how the oxygen radius is a tiny bit bigger than the nitrogen radius. Protons are gradually added to the nucleus at the same time that electrons are gradually added to the main energy level. The enhanced positive charge of the nucleus gradually attracts these electrons closer to it. The size of the atoms shrinks as the strength of attraction between nuclei and electrons grows. Due to electron-electron repulsions that would otherwise result in the atom's size expanding, the effect becomes less pronounced as one proceeds further to the right in a period.
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what is the volume of 35.2g of copper when copper is 8.80 g/cm3 and the density is at 20°C?
The volume of the copper is equal to 4cm³.
What is the density?The density of the substance can be described as the substance's mass per unit of its volume. The symbol commonly used to express density is ρ and the D letter can also be used.
The mathematical formula of the density can be expressed as written below:
Density = Mass/Volume or ρ = m/V
The density of a material varies with temperature and pressure. There is a small variation for solids as well as liquids but much larger for gases. Increasing the pressure of material decreases the volume of material and thus increases its density.
Given the mass of the copper = 35.2 g
The density of the copper at 20°C, d = 8.80 g/cm³
The volume of the copper, V = mass/density = 35.2/8.80 = 4 cm³
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The pressure acting here is 3.32 atm. Then the volume of copper can be determined using ideal gas law. The volume is 3.9 L.
What is ideal gas equation ?Ideal gas equation is a combination of Boyle's law, Charle's law and Avogadro's law. The expression relating pressure, volume, temperature and number of moles of a gas is written as:
PV = nRT.
It can be rearranged as PM = dRT.
where d is the density and M be the mass.
Atomic mass of copper = 63.5 g/mol
density = 8.80 g/cm³
T = 20° C or 293 K.
Then pressure p = dRT/M
p = 8.80 g/cm³ × 0.082× 293 /63.5 = 3.32 atm
Now the weight of copper = 35.2 g
number of moles of Cu = 35.2/63.5 = 0.5 g.
Then, v = nRT/P
v = 0.5 × 0.082 × 293 /3.32 = 3.9 cm³.
Therefore, the volume of copper is 3.9 L.
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Give a Question/Problem for Hot and Cold Compress Pillow.
Help mee plsss
THANK you!!!
Answer:
One problem that people may encounter when using a hot and cold compress pillow is that the pillow may not stay hot or cold for a long enough period of time. This can be frustrating for people who are using the pillow to alleviate muscle pain or reduce inflammation, as they may need to continually reheat or refreeze the pillow in order to maintain its therapeutic benefits. To solve this problem, people may need to find a pillow that is better at retaining heat or cold, or they may need to use additional heating or cooling elements (such as hot water bottles or ice packs) in conjunction with the pillow.
Explanation:
Determine the equilibrium constant Kc and the reaction quotient Qc for a reversible reaction.
Answer:
Explanation:
The equilibrium constant (Kc) is a measure of the relative concentrations of the reactants and products at equilibrium for a given chemical reaction. It is defined as the ratio of the product concentrations raised to their stoichiometric coefficients, to the reactant concentrations raised to their stoichiometric coefficients. For a general reversible reaction
aA + bB <=> cC + dD
The equilibrium constant is defined as:
Kc = [C]^c [D]^d / [A]^a [B]^b
where [X] represents the concentration of species X (in molarity units), and the superscripts on the concentrations represent the stoichiometric coefficients of the species in the balanced equation for the reaction.
The reaction quotient (Qc) is similar to the equilibrium constant, but it is calculated using the concentrations of the reactants and products at a given point in time, rather than at equilibrium. The reaction quotient is also defined as the ratio of the product concentrations raised to their stoichiometric coefficients, to the reactant concentrations raised to their stoichiometric coefficients, and is calculated using the same equation as Kc, but with the concentrations at a specific point in time, rather than at equilibrium.
Qc = [C]^c [D]^d / [A]^a [B]^b
It can be used to predict the direction of reaction depending on the sign of Qc, Kc.
If Qc < Kc, the reaction will shift in the direction of products.
If Qc > Kc, the reaction will shift in the direction of reactants
If Qc = Kc, the reaction is at equilibrium.
If you want to know more about equilibrium reaction you can check on Le Chatelier's principle.
The rate of effusion of a particular gas was measured and found to be 21.0 mL/min. Under the same conditions, the rate of effusion of pure methane (CH4) gas is 47.0 mL/min. What is the molar mass of the unknown gas
the particular gas effusion was 21.0. and the methane effusion rate is 47.0 The molar mass of the unknown gas is approximately 28.6 g/mol
The process through which a gas manages to escape through with a small hole or highly permeable barrier is known as effusion. A gas's rate of effusion is inversely proportional to its molar mass squared. The following equation describes this relationship: rate1 / rate2 = (sqrt(molar mass2) / sqrt(molar mass1)). where rate1 and rate2 are the rates of effusion of the two gases and molar mass1 and molar mass2 are the molar masses of the two gases.Given the rate of effusion of the unknown gas is 21.0 mL/min, and the rate of effusion of pure methane (CH4) is 47.0 mL/min, we can use the above equation to find the molar mass of the unknown gas:
(21.0 mL/min) / (47.0 mL/min) = sqrt(molar mass unknown) / sqrt(16.04 g/mol)
Squaring both sides of the equation, we get:
(21.0 mL/min)^2 / (47.0 mL/min)^2 = (molar mass unknown) / (16.04 g/mol)
Solving for molar mass unknown we get:
molar mass unknown = (16.04 g/mol) * (21.0 mL/min)^2 / (47.0 mL/min)^2
The molar mass of the unknown gas is approximately 28.6 g/mol
Please note that the above calculation is based on the assumption that the temperature and pressure are the same for both gases and that the gases are ideal
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