If 6.00 L of 3.00 M HCl is added to 5.00 L of 2.00 M Ca(OH)2, which species will be the limiting reactant

The answer is 20.46g.

As we know that

1 mole of CO2 has 6.02 x 10^23 molecules of CO2.

Now, let's say x moles of CO2 has 2.80 x 10^23 molecules of CO2.

Therefore,

               x = 2.80 x 10^23 / 6.02 x 10^23 = 0.465

As, M = nmr

  M = 0.465 *( 12 + 2x16)

      = 0.465 *( 12 + 32)

      = 0.465 * 44

      = 20.46g

Answer:

Explanation:

They are Covalent networks solids

Answer:

carbon dioxide produced, or carbon monoxide, soot produced and Soot can cause breathing problems and it blackens buildings.

Explanation:

During complete combustion carbon and hydrogen combine with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O). During incomplete combustion part of the carbon is not completely oxidized producing soot or carbon monoxide (CO).

The fraction of cobalt-60 atoms remaining after 26.5 years is approximately 0.25 (1/4).

An atom is the smallest unit of matter that still retains its properties. It consists of a nucleus, which is made up of protons and neutrons, surrounded by electrons that orbit the nucleus. Atoms are the building blocks of all matter and can combine to form molecules. Atoms are also constantly in motion and can be found in everything from air to rocks. They are essential for life, as they make up all the molecules that form the cells and organs in the human body.

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Answer:

0.25 moles

Explanation:

The carbon atom is in the center of the structure and is surrounded by four hydrogen atoms.

Structure is an organized arrangement of elements, such as components, materials, people, or ideas. It is a way of organizing and arranging the components of a system in order to achieve a desired outcome.

The most likely Lewis dot structure for methane (CH4) is the following:
The carbon atom is in the center of the structure and is surrounded by four hydrogen atoms. Each hydrogen atom has one electron in its outer shell, and the carbon atom has four electrons in its outer shell. All of the atoms are arranged in a tetrahedral shape, which matches the molecular geometry of methane.

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The molecular formula of a compound that has an empirical formula of CH₂O and a molar mass of 120.12 g/mol is C₄H₈O₄.

A molecular formula shows the number of different types of atoms that are present in a molecule whereas an empirical formula represents the simplest whole number ratio of the different atoms present in a molecule.

Given,

empirical formula= CH₂O

molar mass = 120.12 g/mol

To find: molecular formula

we know that,

atomic mass of carbon= 12 g/mol

atomic mass of hydrogen= 1g/mol

atomic mass of oxygen= 16 g/mol

molar mass of CH₂O

= (12+ 1×2 + 16) g/mol

=30 g/mol

therefore, molecular formula

⇒(CH₂O )n = 120.12

⇒30 n= 120.12

⇒n=120.12/30

⇒n= 4.004

⇒n≈4

Thus,

(CH₂O )n = (CH₂O )4 =C₄H₈O₄

Hence, molecular formula is C₄H₈O₄

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The amount of suplher in grams to rpoduce 25.9 kJ energy= 10.95g

Here the reaction is,

S(s) + 2CO(g)  

Hrxn=-75.8 kJ energy.

Answer,

The amount of Sulpher in grams to produce 25.9 kJ energy=  xg=? 

We know that 1mole Sulpher results in the production of \ bigtri angle up Hrxn=75.8 kJ/mol energy.

25.9 kJ of energy produced from how many grams of sulpher= 25.9 kJ / 75.8 kJ/mol = 25.9g/75.8g/mol

                                                                                                                                     =0.34 mol of sulpher

The amount of 0.34 moles of sulpher in grams= Number of moles * Molar mass 

( Molar mss of Sulpher= 32.06g'/mol)

= 0.34mols * 32.06g /mol

=10.95 g

 The amount of suplher in grams to rpoduce 25.9 kJ energy= 10.95g

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When calcium carbonate is heated, it breaks down into the components  calcium oxide and carbon dioxide.

What do you mean by calcium carbonate?

Calcium carbonate is a chemical compound that has the formula CaCO3. It is a common mineral found in rocks as calcite and aragonite, and it is the main component of pearls and the shells of marine organisms, snails, and eggs. Calcium carbonate is a component of agricultural lime that is formed when calcium ions in hard water react with carbonate ions to form limescale. It's commonly used in medicine as a calcium supplement or an antacid, but too much of it can be dangerous.

25 g of calcium carbonate contains 25/100 x (40 + 12 + 3 x 16) = 25/100 x 88 = 22 g of calcium and 12 g of carbon.

Hence, mass of carbon dioxide produced is 12 g.

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Answer: A

Explanation:

Cooling magma becomes more dense and sinks, while hotter magma near the core is less dense and rises, moving magma in a cyclic path.

This answer was obtained from a credible source after doing some research.

The  temperature differences in the layers of Earth move magma as cooling  magma becomes more dense and sinks, while hotter magma near the core is less dense and rises, moving magma in a cyclic path.

Magma is the molten or semi-molten natural material from which all igneous rocks are formed.Magma is found beneath the surface of the Earth, and evidence of magmatism has also been discovered on other terrestrial planets and some natural satellites.Besides molten rock, magma may also contain suspended crystals and gas bubbles.

Magma is produced by melting of the mantle or the crust in various tectonic settings, which on Earth include subduction zones, continental rift zones,mid-ocean ridges and hotspots. Mantle and crustal melts migrate upwards through the crust where they are thought to be stored in magma chambers or trans-crustal crystal-rich mush zones. During magma's storage in the crust, its composition may be modified by fractional crystallization, contamination with crustal melts, magma mixing, and degassing.

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Answer:

are u good at geometry math? their are some questions I didn't understand it PLEASE

The  statement which best explains why the atomic theory developed efficiently is that scientists had used creativity and the scientific method in their investigations regarding the 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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Answer: the answer is B

Explanation: just did it hope it helps

Answer:

The last one is true.

The loss of mass can be accounted for by the energy released during the reaction. When the sulfuric acid and sugar mix, the reaction produces carbon dioxide gas, which has a much lower mass than the original reactants. This is because the reaction releases energy as heat, which causes the molecules to break apart and form the gaseous carbon dioxide.

Molecule is the smallest unit of a substance that has all the properties of that substance and is made up of two or more atoms bonded together. Molecules can either be made of elements or a combination of elements and compounds. Molecules can be described as the building blocks of matter, made up of atoms. Atoms are made up of protons, neutrons, and electrons, and the arrangement of these particles determine the type of molecule.

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1.53 × 10⁻⁵ moles of aspartame are present in 4.50 mg of aspartame.

Two amino acids, aspartic acid and phenylalanine, make up the low-calorie sweetener known as aspartame. In addition to being present in tabletop sweetener packets, aspartame is a common component used to substitute sugar in low-calorie foods and beverages.

Here there are 4.50 mg of aspartame.

First, the mass is converted from mg to g by:

1 g = 1000 mg

So, 1 mg = 0.001 g

So, 4.5 mg = 4.5 × 10⁻³ g

Molar mass of aspartame = 294.40 g/mol

So, Number of moles of aspartame = [tex]\frac{Given mass}{Molar mass}[/tex]

or, n = 4.5 × 10⁻³ / 294.3

or, n = 1.53 × 10⁻⁵ moles.

Hence, 4.50 mg of aspartame has 1.53 × 10⁻⁵ moles of aspartame.

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16.5 g is the mass of sodium chloride that must be dissolved in the same mass of X to produce the same depression at freezing point.

Avogadro's number (6.022 x 1023) of molecules (or formula units) make up one mole of a substance (ionic compound). The mass of 1 mole of a chemical is indicated by its molar mass. It provides you with the number of grams per mole of a substance, to put it another way.

ΔT = Kc*W*i

Kc = cryoscopy constant of the solute X

W = molality of the solution

i = van't Hoff factor, For organic molecules, such as alanine, i = 1.

n = 45.8/89.09

n = 0.5141 mol

W = 0.5141/1.2 = 0.4284 mol/kg

So, Kc of X is:

4.10 = Kc*0.4284*1

Kc = 9.57 °C.kg/mol

So, if now sodium chloride is added to X, and the temperature change is the same, and i = 1.82:

4.10 = 9.57*W*1.82

W = 0.2354 mol/kg

The number of moles of the solute is then:

W = n/1.2

0.2354 = n/1.2

n = 0.2825 mol

The molar mass of sodium chloride is 58.44 g/mol, thus the mass is the molar mass multiplied by the number of moles:

m = 58.44*0.2825

m = 16.5 g

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V2 + 2NO → 2H2O + N2 The equation is balanced by adding an additional coefficient (2) to the hydrogen (H2) and water (H2O) molecules on the product side.

Balanced is a term used to describe a state of equilibrium or harmony. It implies a situation where all elements are in proportion and none are out of place or dominant. This could describe a healthy diet that provides a balance of proteins, carbohydrates, and fats, or a successful family life where time is shared between work, play, and private activities. Balance is also a key factor in physical and mental health, when all aspects of life are in alignment it allows for a more fulfilling and enjoyable experience.

This ensures that the number of atoms of each element is equal on both sides of the equation. In other words, the number of atoms of hydrogen (H2) and water (H2O) molecules on the left side of the equation must be equal to the number of atoms of hydrogen (H2) and water (H2O) molecules on the right side of the equation.

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The expression is  [tex]\frac{(h+2)}{4}[/tex] which can be solved by BODMAS rule

The abbreviation BODMAS, which stands for "Brackets, Order of powers or roots, Division, and Multiplication," is followed by the BODMAS rule. A stands for addition and S for subtraction. According to the BODMAS rule, multi-step mathematical statements must be solved in the BODMAS order from left to right. Similar to how Addition and Subtraction depend on which comes first in the sentence, Division and Multiplication are thought of as interchangeable operations.

The expression can be written as follows WE have 2 quantities h and 2

Their sum can be written as h+2 Now We have the sum divided by 4 so it can be written as : [tex]\frac{(h+2)}{4}[/tex]

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The chemical equation for this reaction is best written as: Na (s) + Cl2 (g) → NaCl (s) + Heat

Reaction is a process in which one or more substances are changed into one or more different substances. It is a chemical or physical change that occurs in response to a stimulus. Reactions can be used to create new materials or to break down existing materials into simpler components. They can also be used to generate energy or to store energy. Reactions can be either spontaneous or non-spontaneous, depending on the conditions in which they occur.

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Na ion concentration will remain constant if you increase the overall number of Na ions while also increasing the volume of water in which they are dissolved.

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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The complete lewis structure is shown in the below figure by adding lone pairs and formal charges.

Assign the valence electrons to each atom as dictated by the periodic table placing one electron at each compass direction and then pairing them only after the first four until you have place all of the atom’s valence electrons. (See the Roman numeral above the group/column it is in.)

Arrange the remaining atoms around the central atom and join them to the central atom by a single bond. The more electronegative atoms are typically farther away from the center and attaching hydrogen last is advised.

Lone electrons (not lone pairs) indicate an ability to form more covalent bonds, resulting in either double or triple bonds. Their presence or the lack of a full octet on any atom indicates there is a better Lewis structure.

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PBr₃ and Carbon Tetraiodide is a covalent compound. Whereas, KBr and Iron (III) Oxide is an ionic compound.  

Covalent compounds and molecular compounds are those compound where two non-metals, or a non-metal are bonded to each other through the sharing pair of electrons.

PBr₃ are covalent because phosphorous is in the column 3 in periodic system and it has three valence electrons in its outer shell. Therefore, in case of Carbon Tetraiodide carbon and iodide both are non-metals that why they are covalent compounds.

KBr and Iron (III) Oxide both are Iron (III) Oxide because they are formed by the interaction between a metal and non-metal. They will transfer the electrons from positively to negatively charged atoms.

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The total pressure in the flask is 1.320 times the total pressure.

Pressure is an important concept in chemistry, as it affects the physical behavior of gases and solids, and the rates at which reactions occur. Pressure is a measure of the force applied to an area, typically expressed in units of atmospheres (atm), or kilopascals (kPa).

Methane :

Mole fraction of methane = (231 mL / 2.00 L) = 0.1155

Partial pressure of methane = 0.1155 * Ptotal

Chlorine:

Mole fraction of chlorine = (907 mL / 2.00 L) = 0.4535

Partial pressure of chlorine = 0.4535 * Ptotal

Products:

Mole fraction of products = (75.9% com) = 0.759

Partial pressure of products = 0.759 * Ptotal

Total pressure = 0.1155*Ptotal + 0.4535*Ptotal + 0.759*Ptotal = 1.320*Ptotal

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the element that was reduced in this redox reaction is Fe

A redox reaction, also known as an oxidation-reduction or redox reaction, involves the exchange of electrons between chemical entities (the atoms, ions, or molecules involved in the reaction). Redox reactions occur everywhere; they are involved in the burning of fuels, the rusting of metals, and even the processes of photosynthesis and cellular respiration.Some species experience oxidation, or the loss of electrons, while others experience reduction, or the gain of electrons, during a redox process. Take rust, which results from the interaction of iron and oxygen:The third selection from the options presented above is the right response. The element that was reduced in the described redox reaction was Fe, or iron. It now has a neutral charge after having its +3 charge lowered.

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22.3 g of NaN₃ are required to fully inflate an airbag of 11.5 L at STP.

Chemical decomposition, also known as chemical breakdown, is the process of breaking down a single chemical entity into two or more components. Chemical breakdown is commonly thought of and characterized as the inverse of chemical synthesis. When one reactant breaks down into two or more products, this is referred to as a decomposition reaction. This is expressed by the following generic equation: AB A + B. The breakdown of hydrogen peroxide to water and oxygen is an example of a decomposition process, as is the breakdown of water to hydrogen and oxygen.

Here,

In airbags, sodium azide decomposes to form sodium and nitrogen gas, which inflates the bag. The decomposition reaction is:

2 NaN₃ ⇒ 2 Na + 3 N₂

We can calculate the mass of NaN₃ needed to produce 11.5 L of N₂ at STP, using the following relations.

At STP, 1 mole of N₂ occupies 22.4 L.

The molar ratio of N₂ to NaN₃ is 3:2.

The molar mass of NaN₃ is 65.01 g/mol.

=11.8*1/22.4*2/3*65.01/1

=118/112*21.67

=22.82 g

22.3 g of NaN₃ are required to fully inflate an airbag of 11.5 L at STP.

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A meterstick is used to measure things in meters and centimeters.

Meterstick is the measurement tool that measures one meter (hundred centimeters) and is used to measure the things in meters and centimeters. Metersticks are often rectangular and tin, and it is made up of wood or metal. Metal ones are often backed with a 'grippy' material such as cork, to improve the friction. Metersticks are usually divided within the lines for each millimeter (1000 per meter) and the numerical markings as per centimeter (100 per meter), with the numbers either in centi- or millimeter. It is a large ruler used for measuring the size or the distance using the metric scale.

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After solving the equation: The half-life for this reaction is 0.693/0.271 = 2.56 s.

Reaction is the response of a system to an external or internal stimulus. It is the way a person or object behaves in response to a change in their environment. Reactions can be physical, chemical, or psychological. Physical reactions involve changes in the body, such as muscle tension, sweating, or heart rate.

The half-life for this reaction is the time it takes for the concentration of molecular iodine to decrease by a factor of 2, or for half of the original amount of molecular iodine to react. This can be calculated using the equation:

T1/2 = 0.693/k

where k is the first-order rate constant.

Therefore, the half-life for this reaction is 0.693/0.271 = 2.56 s.

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Zinc, phosphorus and oxygen are elements contained in dental cement (Zn₃(PO₄)).

Dental cements have a wide range of dental and orthodontic applications. Common uses include temporary tooth restoration, lining cavities to protect the pulp, sedation or isolation, and cementation of fixed prosthetic devices.

A cement-retained bridge is simply a dental device that is permanently fixed in the mouth to restore the mouse's function and aesthetics and to prevent many of the consequences of tooth loss that affect the immediate aftermath of losing natural teeth.

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When we work with a chemical that emits hazardous vapors or fumes, the  best way to protect ourself is by using the fumes hood when working with chemicals.

The best way to protect ourself from the chemical fumes or vapor is the work with chemicals in the fumes hood. the fume hood is the ventilation device that limits the exposure of the hazardous fumes or the vapors.

There are several other ways to protect ourself from the chemical fumes are :

These are the some methods use to protect ourself from the chemical fumes or vapors.

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