The type of reaction is a double replacement reaction. In a double replacement reaction, the positive ions of two compounds switch places to form two new compounds.
What is the balanced chemical equation for the reaction?The balanced chemical equation for the reaction between magnesium and lead(II) nitrate is:
Mg(s) + Pb(NO3)2(aq) -> Mg(NO3)2(aq) + Pb(s)
In this equation, the magnesium and lead ions switch places to form the new compounds magnesium nitrate and lead. The coefficients in front of the compounds indicate the number of moles of that substance that are involved in the reaction. The subscripts indicate the number of atoms of each element in each compound.
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What is the theoretical yield of water in this test reaction?
The theoretical yield of water in this reaction is 1 mole (18.015 grams) of water.
What is theoretical yield?Theoretical yield is the amount of a product one would expect to yield from a reaction if it proceeds to completion, according to a balanced chemical equation. It is calculated by multiplying the limiting reactant by the molar ratio between the reactants and the products. The actual yield of a reaction is usually lower than the theoretical yield, due to a number of factors such as incomplete conversion of reactants to products, product losses, and impurities in the reactants. Theoretical yield is used to calculate the percentage yield of a reaction, which is the ratio of the actual yield to the theoretical yield multiplied by 100.
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Answer:
360.g water
Explanation:
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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I need some chemistry help
Thank u
H2(g) + Cl2(g) = 2 HCl (g) AH-184.6 kJ where the mathematical notation for "is equivalent to" is. However, we also have a quantity called energy change in our thermochemical equation
What is a thermochemical equation mean?Thermochemical equations are symmetric chemical equations that take into account both the energy change and the physiological state of all products and reactants. When energy is a reactant, a reaction is endothermic; whereas, when energy is a product, a reaction is exothermic.
How is a thermochemical process expressed in writing?A balance empirical formula with its heat per reaction is known as a thermochemical equation. They appear to be equal to A+B+C+H=Xjoules. You are already proficient at creating and balancing chemical equations. Therefore, all we must do is add either H or U values.
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What is the energy of each of the following photons in kilojoules per mole? Express the energy in kilojoules per mole to three significant digits.
Part A: ν=5.95×1019s−1
Part B: ν=20.00×103s−1
Part C: λ=2.57×102m
The energy of a photon can be calculated using the formula: E = hν = hc/λ, where E is the energy, h is Planck's constant (6.626 x 10^-34 Js), ν is the frequency, c is the speed of light (2.998 x 10^8 m/s), and λ is the wavelength which is 6.53 x 10^-38 kJ/mol
Part A: ν = 5.95 x 10^19 s^-1
E = hν = (6.626 x 10^-34 Js) x (5.95 x 10^19 s^-1) = 3.948 x 10^-14 J/photon
To convert to kilojoules per mole, we need to divide by Avogadro's number (6.022 x 10^23 photons/mol)E = (3.948 x 10^-14 J/photon) / (6.022 x 10^23 photons/mol) = 6.53 x 10^-38 kJ/mol
Part B: ν = 20.00 x 10^3 s^-1
E = hν = (6.626 x 10^-34 Js) x (20.00 x 10^3 s^-1) = 1.325 x 10^-31 J/photon
To convert to kilojoules per mole, we need to divide by Avogadro's number (6.022 x 10^23 photons/mol). E = (1.325 x 10^-31 J/photon) / (6.022 x 10^23 photons/mol) = 2.20 x 10^-55 kJ/mol. Part C: λ = 2.57 x 10^2 m. E = hc/λ = (6.626 x 10^-34 Js) x (2.998 x 10^8 m/s) / (2.57 x 10^2 m) = 3.948 x 10^-14 J/photon. To convert to kilojoules per mole, we need to divide by Avogadro's number (6.022 x 10^23 photons/mol) .E = (3.948 x 10^-14 J/photon) / (6.022 x 10^23 photons/mol) = 6.53 x 10^-38 kJ/mol. In all the parts, the energy is expressed in kilojoules per mole to three significant digits.
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What would happen to the boilling point of water at 8000m above sea level where air pressure is lower
The boiling point will be lower, because water boils when its vapor pressure is equal to atmospheric pressure.
What is atmospheric pressure?Atmospheric pressure is described as the force exerted on a surface by the air above it as gravity pulls it to Earth. Atmospheric pressure is commonly measured with a barometer.
If you are at 8 000 m above sea level, the air pressure is lower than one atmosphere and the equilibrium between the water and air pressures will be reached before.
In conclusion, Atmospheric pressure is caused by the weight of the air molecules above.
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The boiling point of water at 8000m above sea level where air pressure is lower would be significantly lower.
How does air pressure affect boiling point ?The boiling point of water decreases as the air pressure decreases. At an altitude of 8000 meters above sea level, the air pressure is significantly lower than it is at sea level, so the boiling point of water would also be significantly lower.
At sea level, the normal boiling point of water is 100 degrees Celsius (212 degrees Fahrenheit) at a standard atmospheric pressure of 101.3 kPa. As the altitude increases, the atmospheric pressure decreases, so the boiling point of water decreases as well.
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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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if a molecule has a phase transition from gas to liquid, does that mean it increases attractive force
When a molecule undergoes phase transition from gas to liquid, it means that there is an increase in the attractive force.
The matter which is present around us exists in three major states which are solids, liquids and gases. The attractive forces that are present between the particles of matter are known as the intermolecular forces and they change with the change or transition in state of matter.
The particles of solids have the highest intermolecular force followed by liquids and then followed by gas. When a particular gas changes into the liquid state, the attractive forces between its particles increases.
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Identify the reactant, reagent, and solvent used to synthesize the alkyl lithium reagent shown. Reactant reagant --> solvent /\/\Li + LiBr
Identify the reagent. O 2 Li O CH3Li O LiOH
The reactant in the synthesis of the alkyl lithium reagent shown is an alkyl halide, likely represented by the structure //\Li + LiBr. The reagent used to synthesize the alkyl lithium reagent is lithium metal, represented by the structure O 2 Li.
The solvent used in the synthesis is not specified in the given information. It's common to use ethers such as diethyl ether or tetrahydrofuran as solvents in the synthesis of alkyl lithium reagents.It's worth noting that the structure O CH3Li is showing a methyl lithium reagent, which is a different compound than the alkyl lithium reagent shown in the first part of the question, and the structure LiOH is showing Lithium hydroxide which is not involve in the synthesis of alkyl lithium reagents.
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What causes pressure inside a helium balloon?
OA. The helium atoms exert an electrostatic force that pushes the
surface outward.
OB. The helium atoms expand and press on the surface of the balloon.
OC. The helium atoms bounce off the surface as they move inside the
balloon.
OD. The helium atoms stick to the surface of the balloon and increase
its weight.
Pressure inside a helium balloon: The helium atoms expand and press on the surface of the balloon.
What is helium balloon?Helium balloons are a type of balloon filled with helium gas. Helium is a light, non-flammable, inert gas that is found in abundance in the atmosphere and is used to inflate balloons. Helium balloons are often used in decorations, promotions, special events, parties, and displays. They come in a variety of shapes, sizes, and colors, and can be filled with helium and released into the atmosphere, creating a festive atmosphere. Helium balloons are also used in scientific experiments, such as measuring wind speeds, studying atmospheric pressure and air movement, and measuring the temperature of the atmosphere.
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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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A gas has a pressure of 120 kPa, a temperature of 400 K and a volume of 50.0 mL. What volume will the gas have at a pressure of 60 kPa and a temperature of 200 K
The gas will have a volume of 25.0 mL at a pressures of 60 kPa or a temperature of 200 K.
What is temperature?The average kinetic potential of the particle in a system is measured by temperature. Temperature is measured using thermometers, which measure the temperature of a system by taking a reading of the system's average kinetic energy. Temperature is measured in degrees, with higher temperatures indicating a higher average kinetic energy. Temperature can be affected by a variety of factors, including the amount of energy added to or removed from a system, the number of particles present in the system, and the type of particles present in the system.
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if you start with 5 grams of carbon on the reactant side how many grams of carbon should you start with
Based on the provided information, the number of grams of carbon should you end with is 5g.
If you start with 5 grams of carbon on the reactant side, the grams of carbon you should end with 5g based on the law of conservation of mass. The law of conservation of mass, also known as principle of mass conservation postulate that for any system closed to all transfers of matter and energy, the system mass must remain constant over time, as the mass of system cannot change, so quantity can neither be added nor be removed. Hence, the law states that mass is neither created nor destroyed in a chemical reaction. Hence, the grams of reactants that one starts with, one will end with the same amount. Chemicals recombine to give a different compound in the product, the mass is still always conserved.
Note: The question is incomplete. The complete question probably is: If you start with 5 grams of carbon on the reactant side, how many grams of carbon should you end with?
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what is a balanced nuclear equation for power generation?
A balanced nuclear equation for power generation by nuclear fission is given below:
²³⁵₉₂U + ¹₀n ---> ⁹²₃₆Kr + ¹⁴¹₅₆Ba + EnergyWhat is nuclear fission?The process of nuclear fission involves the splitting of an atom's nucleus into two or more smaller nuclei. Even by the energetic standards of radioactive decay, the fission process releases a very high quantity of energy and frequently results in gamma photons.
Nuclear fission is applied in nuclear power generation in a nuclear reactor.
The fissionable nuclear material is separated in the nuclear reactor so that a critical mass cannot exist, and the neutron flux and absorption are controlled to stop the fission reactions. The energy released during fission processes in a nuclear reactor used to generate electricity is trapped as thermal energy and used to heat water and create steam. The steam is utilized to turn a turbine, which powers an electricity-generating generator.
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A coffee cup calorimeter is filled with 200. 0 mL of water at 22. 1°C. A piece of metal at 48. 6°
°
C with a mass of 5. 1 g is added. The final temperature of the water in the calorimeter is 26. 8°C. The density of liquid water is 1. 00 g/mL, and its specific heat capacity is 4. 18 J/(g°C). Determine the specific heat capacity of the metal
The specific heat capacity of the metal is 35.34 J/g/°C, if the specific heat capacity of the water is 4.18 J/g/°C.
Volume of water = 200 ml
Density of water = 1 gm/ml
So the mass of the water in coffee cup, m₁ = 200×1 = 200 gm
Initial temperature of water, T₁ = 22.1°C
Specific heat capacity of water, S₁ = 4.18 J/g/°C
Mass of the metal, m₂ = 5.1 gm
Initial temperature of the metal, T₂ = 48.6°C
Final combined temperature of both, T = 26.8°C
Let the specific heat capacity of the metal = S₂
Heat gain by the water = heat loss in the metal
S₁ × m₁ × (T-T₁) = S₂ × m₂ × (T₂-T)
4.18 × 200 × (26.8-22.1) = S₂ × 5.1 × (48.6-26.8)
3929.2 = S₂ × 111.18
S₂ = 3929.2/111.18
S₂ = 35.34 J/g/°C
So, the specific heat capacity of the metal is 35.34 J/g/°C.
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0.23 g of a sample of common salt contained 0.1518 g of chlorine .show that these results are in agreement with the law of constant proportion
To solve this we must be knowing each and every concept related to Law of constant proportion. Therefore, the results are in agreement with the law of constant proportion.
What is Law of constant proportion?Chemical compounds are composed of components that are present in a set ratio by mass, according to the Law of Constant Proportion. The Proust law or Law of Definite Proportions is another name for the Law of Constant Proportion. NaCl will continue to have a 1:1 mass ratio.
mass of NaCl = mass of Cl + mass of Na
0.25 g= 0.1518 gm+ mass of Na
mass of Na = 0.0982 gm.
ratio of 1st sample= mass of Cl /mass of Na
= 0.1518 gm/ 0.0982
=1.54
In the second sample, NaCl weighs 0.24 g, Cl weighs 0.1458 g and Na weighs 0.0942 g.
ratio of 2nd sample is = 0.1458 g/0.0942 g.
=1.54
Therefore, the results are in agreement with the law of constant proportion.
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Using Tables 1 to 3, what pattern do you observe in terms of the phase, number of carbon atoms, structure and boiling point of the alkanes, alkenes, and alkynes? Explain the patterns you observe.
As the number of carbon atoms increases the phase changes from gas to liquid,length of chain increases and also the boiling point increases in case of alkanes, alkenes, and alkynes.
What is an atom?An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.
The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.
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Why were the authors interested in determining the strength of the hydrogen bond in solution as opposed to in a vacuum
This is because intermolecular forces have a greater effect in a solution when bonding is present than in a vacuum when bonding is not present.
The attracting and repellent forces that develop between the molecules of a substance are known as intermolecular forces or IMF for short. Individual molecules of a substance interact with one another through the mediation of these forces.
Most of the physical and chemical features of matter are caused by intermolecular forces.
An intermolecular force is an attractive force that develops between the protons or positive parts of one molecule and the electrons or negative parts of another molecule. This force affects a substance's many physical and chemical properties. The strength of a material's intermolecular forces directly relates to the boiling point of that substance; the stronger the intermolecular forces, the higher the boiling point.
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colour of anhydrous copper II sulphate
Answer:
White color
Explanation:
This compound when heated losses its water of crystallization and become anhydrous copper sulphate
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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Is 1g equal to 1 mol?
How many grams of zinc metal will be produced by treating 54. 0 grams of
aluminum with a solution of zinc chloride, ZnCl,?
(A:196 g Zn)
By treating 54.0 grams of aluminum with a solution of zinc chloride, ZnCl, 328.6g/mol of zinc metal will be created.
The definition of molar mass.The molar mass of a substance is its mass expressed in grams per mole. As shown in this video, the molar mass of a substance can be calculated by adding the molar masses of the substance's component atoms. The number of moles in the substance can then be calculated from its molar mass and converted to mass.
Balance chemical reaction,
2Al + 3ZnCl₂ → 2AlCl₃ +3Zn
Molar mass of aluminum is 27.99g/mol
Molar mass of zinc chloride is 136.29g/mol
The mole ratio of ZnCl₂ to Al is 3:2
Grams → moles → moles → grams
45Al × 1mol Al/27.99g Al × 3 mol ZnCl₂/2 mol Al × 136.29 g ZnCl₂/1 mol ZnCl₂
on simplification,
45×3×136.29/27.99×2 = 328.6g/mol.
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After the shuttle disaster, an unknown compound residue was removed from a piece of the debris. Upon analysis, it was found to contain 2. 61 g of carbon, 6. 09 g of nitrogen, and 1. 31 g of hydrogen. What is its empirical formula?
The empirical formula of the compound is C2N3H2.
What is an Empirical formula?
An empirical formula is a type of chemical formula that shows the simplest ratio of atoms in a molecule, rather than the total number of atoms. It is the simplest possible chemical formula that shows the relative numbers of each type of atom in a molecule.
This formula is determined by dividing the mass of each element by its atomic weight, and then dividing the result by the lowest of the results. The lowest result is 0.817 g/mol for carbon. This means that 2.61 g of carbon is equivalent to 3.17 moles of carbon. Thus, the ratio of elements in the compound is 3.17 moles of carbon, 7.44 moles of nitrogen, and 1.6 moles of hydrogen. Dividing each of these numbers by the lowest number (3.17) gives the ratio of 2 for carbon, 2.35 for nitrogen, and 0.5 for hydrogen. This ratio is simplified to 2:2:1, which corresponds to the empirical formula C2N3H2.
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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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A student filled a dialysis tube with 97% water solution and sealed the ends. The tube and its contents had a mass of 55 grams. The student placed the tube in a solution, and the mass of the tube and its contents increased to 60 grams. Into which solution was the dialysis tube placed
The dialysis tube was placed in a solution with a higher concentration of solutes than the 97% water solution inside the tube.
What is solution?Solution is a way of resolving a problem or addressing an issue. It often involves identifying the underlying cause of the issue and then coming up with a plan that can be implemented to address the problem. Solutions may involve simple steps, such as changing a behavior, or they may involve more complicated processes that require multiple steps, such as creating new policies or procedures. Solutions should be designed to be effective, sustainable, and measurable.
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Since carbon-14 decays at a steady rate, it is a reliable method to determine the age of rock samples. True False
The aforementioned claim is TRUE; as carbon-14 degrades steadily, it can be used to accurately estimate the age of rock samples.
Comment on carbon-14.The radioactive isotope of carbon 14 (14C) decays at a constant, well-known pace. Scientists can ascertain how long ago an organic substance died by calculating the quantity of 14C present in a sample of the material, such as bone or wood. This process, known as radiocarbon dating, is frequently used in geology and archaeology to date objects that are up to 50,000 years old.
Since carbon-14 decays steadily, it provides a trustworthy way to estimate the age of rock samples.
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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 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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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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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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A particular brand of gasoline has a density of 0.733 g/mL at 25 oC. How many grams of this gasoline would fill a 10.7 gal tank (1 US gal
For a certain brand of gasoline, which has a density of 0.733 g/mL at 25 oC, 41848 grammes would fill a 10.7 gal tank. Mass in relation to volume is referred to as density.
Although the Latin letter D can also be used, the symbol for density is most frequently written as (the lower case Greek letter rho). Any combination of gases can be considered a gas gas solution. As a result of their great distance from one another, gas molecules typically only interact very little. All gases can therefore be thought of as being soluble in one another.
15x 3785.41 ml = 56781.15 ml. Consequently, the mass is calculated as 0.737g/ml x 56781.15 ml = 41848 grammes.
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