how many molecules are there in 4.00 moles of carbon
with step-by-step please and thank you

Two moles or 36 g of water on decomposition gives 32 grams of oxygen gas. Then 494 g of water will give 439.1 g of oxygen.

The decomposition is a type of reaction in which a single compound breaks into its constituent elements or molecules. Water molecules are formed by the combination of hydrogen and oxygen atoms.

Decomposition of two moles of water  decompose to give 2 moles of hydrogen gas and one mole of oxygen gas.

molar mass of water = 18 g/mol

molecular mass of oxygen  = 32 g/mol

Two moles or 36 g of water gives one mole or 32 g of oxygen gas. Then mass of oxygen produced by 494 g of water is :

(494 ×32)/36 g = 439 g

Therefore, 439 g of oxygen gas is formed by the decomposition of 494 g of water.

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The color codes can help us to know the formula of the molecule.

To determine the chemical formula from a molecular model, you need to identify the types and numbers of atoms in the molecule. Each atom is represented by a different symbol, such as H for hydrogen, C for carbon, and O for oxygen.

We do not have the color codes for the atoms in the molecule here thus we can't be able to tell for sure what the molecule should be. If we did have it, then the molecule can be known from the color codes.

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Answer:

3

Explanation:

the three elements involved in this compound are Li, S, O.

lithium, sulfur, and oxygen. Which create the ionic compound, "Lithium Sulfate."

7 atoms total, since there are two lithium, four oxygen, and one sulfate atom. this is a white inorganic salt.

There are three different types of elements in LiSO₄ which are lithium (Li), sulfur (S), and oxygen (O).

An element is a pure substance made of only one kind of atom which all have the same number of protons in their nuclei.

The chemical element was first presented by Robert Boyle who defined it as "incapable of decomposition”. Boyle’s this definition lies admirably close to present-day theory.

When different kinds of elements undergo particular chemical reactions then atoms are rearranged into new compounds connected together by chemical bonds.

All other naturally occurring elements occur on the Earth as compounds or mixtures. Air is a mixture of the elements nitrogen (N₂), oxygen (O), and argon (Ar), though it does contain carbon dioxide and water.

Given compound, lithium sulfate is formed of LiSO₄ has elements lithium, sulfur, and oxygen.

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Answer:As hydrogen atoms collide to create helium, enormous quantities of energy are released, heating the gas. This process, known as nuclear fusion, is what causes stars to shine. The pull of gravity inward is resisted by the heated gas as it pushes outward.

Explanation:

Answer:

I'm not entirely sure what your study is about, but I can tell you that any research or study that contributes new knowledge or insights to a particular field can be valuable. It's important to identify gaps in the existing literature and to approach your research with a clear and focused question or objective. Ultimately, the value of your study will depend on the quality of your research and the significance of your findings.

Answer:

C

Explanation:
Cause wave's get larger and larger and it will repeat over and over

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Light take 500 seconds to reach to the earth from the sun with the speed of 300,000 km/s.

Light is a type of electromagnetic radiation that helps the human eye see and makes objects visible. It can also be referred to as radiation that the human eye can see. Photons, that are little energy packets, are present in light. Light moves in straight lines at all times.

Given,

In ten seconds, light travels 3,000,000 kilometers.

Therefore, the speed of light is:

3,000,000 km / 10 s = 300,000 km/s

There are 150,000,000 km between the Earth and the Sun on average. This means that light, traveling at a speed of 300,000 km/s, takes:

150,000,000 km / 300,000 km/s

= 500 seconds

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When hydrogen bromide (HBr) is added to 2-methylbut-2-ene ((CH3)2CCHCH3), an electrophilic addition reaction takes place, where the π bond of the alkene is broken, and the hydrogen and bromine atoms are added to the resulting carbocation.

The reaction proceeds through a Markovnikov addition, where the hydrogen atom attaches to the carbon atom with the greater number of hydrogen atoms.

In this case, the initial addition of HBr to 2-methylbut-2-ene leads to the formation of a primary carbocation, as the positively charged carbon atom only has one alkyl group attached to it. The primary carbocation is relatively unstable, and it can undergo a rearrangement to form a more stable secondary carbocation.

The major product that is typically obtained is the 2-bromo-2-methylbutane. The hydrogen atom from HBr adds to the carbon with three hydrogen atoms (the more substituted carbon), resulting in the formation of a secondary carbocation.

On the other hand, a minor product is also formed, which is 3-bromo-2-methylbutane. This product arises from the addition of HBr to the primary carbocation, which is less stable. Although the primary carbocation is less favored, it can still be formed and lead to the formation of the minor product.

In summary, the addition of HBr to 2-methylbut-2-ene yields two products: the major product is 2-bromo-2-methylbutane, resulting from the addition of HBr to the more stable secondary carbocation, and the minor product is 3-bromo-2-methylbutane, originating from the less stable primary carbocation.

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Algal blooms and high concentrations of nitrogen in water are effects of water pollution. Overgrazing and the use of chemical fertilizers cause water pollution.

Algal blooms are an effect of water pollution. They occur when there is an excessive amount of nutrients, particularly nitrogen and phosphorus, in the water due to pollution. The overgrowth of algae depletes the oxygen levels in the water, which can harm fish and other aquatic animals.

Overgrazing can cause water pollution by increasing the sedimentation rate of waterways. This sedimentation can carry nutrients, bacteria, and other pollutants into the water, which can degrade water quality and cause harm to aquatic life.

The use of chemical fertilizers to enhance production is a cause of water pollution. When fertilizer is overused, it can leach into waterways and cause nutrient pollution, which can lead to algal blooms and other forms of water pollution.

High concentrations of nitrogen in water are often an effect of water pollution. This can be caused by the overuse of fertilizers or the discharge of untreated sewage into waterways. High nitrogen levels can cause algal blooms, which can lead to oxygen depletion and harm aquatic life.

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Answer:

Cause:

: : use of chemical fertilizers to enhance production

: : overgrazing

Effect:

: : high concentration of nitrogen in water

: : algal blooms

Hope this helps ;)

The experiment looks into how temperature impacts how quickly magnesium metal reacts with hydrochloric acid. The creation of hydrogen gas over time is used to determine the dependent variable, which is the reaction rate.

The experiment can be run at various temperatures to change the experiment's independent variable, which is the reaction mixture's temperature. Higher temperatures cause molecules to move more quickly, increasing the likelihood of reactant collisions and kinetic energy. By enabling more successful collisions between magnesium atoms and hydrochloric acid, can quicken the reaction and increase the amount of hydrogen gas produced. In contrast, it is anticipated that the reaction rate will be slower at lower temperatures since there will be less molecular mobility and fewer successful collisions.

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--The complete Question is, What is the effect of temperature on the rate of reaction between hydrochloric acid and magnesium metal?

The dependent variable in this experiment is the rate of reaction, which can be measured by monitoring the production of hydrogen gas over time. The independent variable is the temperature of the reaction mixture, which can be controlled and varied by conducting the experiment at different temperatures.--

Balanced chemical reaction given by

\(\\ \rm\rightarrowtail 2C_2H_2+5O_2\longrightarrow 4CO_2+2H_2O\)

moles of O_2.

Now

1.5mol produces:-

Volume of cO_2

The Insoluble Substance is Barium Nitrate

BANO4

Solubility rules for chromate (CrO₄²⁻) are all chromate are insoluble, except for ions group 1 (Li⁺, Na⁺, K⁺). So soluble chromate are

Li₂CrO₄

Na₂CrO₄

K₂CrO₄

Potassium chromate K₂CrO₄ is soluble.

A substance is said to be insoluble if it doesn't change when placed in water.

When introduced to water, soluble compounds typically form one continuous phase (eg when salt is added to water).

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To calculate the volume of 0.3000 M NaCl solution that is required to produce 0.1950 moles of NaCl, we can use the formula: moles = Molarity x Volume

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Answer:

The speed of sound in diamond is about **12,000 metres per second (39,000 ft/s)** which is about **35 times** its speed in air³. To convert this to feet per hour (ft/hr), we can use the following conversion factors:

1 meter = 3.28084 feet

1 second = 3600 hours

Therefore, the speed of sound in diamond in feet per hour (ft/hr) is:

12,000 m/s x 3.28084 ft/m x 3600 s/hr = 141,732,480 ft/hr

The IUPAC name of the structure (9) is 4-ethyl-2,3-dimethyl-heptane.

The first step is to select the longest, most substituted carbon chain containing a functional group is chosen. Then the identification of the primary suffix indicates the degree of saturation such as 'ane' or 'ene.

Then the identification of the secondary suffix indicates the functional group present in the molecule which depends on the number of occurrences of the same functional group such as di. tri tetra etc. Carbon atoms in the carbon chain are numbered from the reactive end of the molecule where the functional group is present.

In the given structure the longest carbon chain of seven carbon atoms. The methyl groups are present at the second and third position and the ethyl group is present at the fourth position. All the bonds in the structure are single bonds so the suffix is 'ane'. Therefore, the IUPAC name is 4-ethyl-2,3-dimethyl-heptane.

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Answer:

O place them in a flame dissolve them in water o add more particles to the solution.

Answer:

C

Explanation:

Hope it helps!

Answer:

12.5 grams

Explanation:

Answer:

b

Explanation:t not sure

Answer:

c

Explanation:

The process's entropy change has the sign  ΔSsys > 0

The entropy of an isolated system never decreases, according to the Second Law of Thermodynamics.

This means that for a process to be spontaneous, the entropy of the system must increase.

This is the theory used in this question to predict the sign of the entropy change for the dissolution process.

In the given  question ,

This is an example of a dissolution process, which is an endothermic process because energy is required to break the strong ionic bonds of the solid.

Therefore, the entropy of the system increases as the molecules become more disordered, leading to a positive entropy change, ΔSsys > 0.

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To identify the gas produced in a chemical reaction without observing the atoms and molecules directly through the characteristics of the gas.

Chemical reaction is defined as the process by which substances (known as reactants) combine together with the formation of bonds to form products.

There are some signs that shows that chemical reaction has occurred. They include:

Therefore, the production of gas from a chemical reaction shows that a reaction has occurred.

These gases can be identified without observing the molecules through that characteristics of the gas. This include:

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Answer:

Plum pudding model

Explanation:

Thomson’s model of the atom called: PLUM PUDDING MODEL

Answer:

protons: 6

neutrons: 8

electrons:6

The formula should be MNO₃ because the valency of the metal and the nitrate ion both is 1 and thus the formula will be MN0₃.

Cold water causes a strong reaction between all alkali metals. Each time a reaction occurs, hydrogen gas is released along with the metal hydroxide. As you move down the group, the reaction gets faster and more violent. This demonstrates that as you move below Group 1, the alkali metals' reactivity rises.

Chlorides are created when any of the group 1 metals interact with chlorine. At room temperature, the chlorides are all white solids that dissolve to create a neutral solution. As you move down the group, the reactions get more forceful.

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To solve such this we must know the concept of synthesis reaction. Therefore, the correct option is option A that is It represents a synthesis reaction because two reactants form one product.

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

It represents a synthesis reaction because two reactants form one product. This statements best explains the type of chemical reaction represented by Larry's picture. synthesis reaction is the one where two reactant combine to form one product.

Therefore, the correct option is option A.

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Answer

B. 6.02 x 10²³ molecules CH₄

Explanation

Avogardro's constant says 1 mole of a substance has 6.02 x 10²³ molecules.

⇒ 1 mole = 6.02 x 10²³ molecules/atoms

Therefore, the mole of methane in the given molecules can be calculatedas follows

Hence, what belongs to the green box is 6.02 x 10²³ molecules CH₄

Answer:

and is capillaries

Explanation:

hope it helps

Answer:

b is the correct answer

do not trust answer one

Explanation: