Sometimes people say that the air is thinner high up on a mountain is that true

Answers

Answer 1

Answer:

Answer:

Yes

Explanation:

As altitude increases, the amount of gas molecules in the air decreases—the air becomes less dense than air nearer to sea level. This is what is meant by "thin air".

Answer 2

Answer:

Answer:

Yes because the air becomes less compressed and is therefore thinner.

Explanation:

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Each type of mineral has a chemical composition that isA. unique to that mineral
B. similar to other minerals
C. variable depending on where its found
D. influenced by heat and light

Answers

Answer: C. variable depending on where its found

The chemical compositions of minerals is very necessary in order to define or describe a certain mineral. Some minerals can be written in simple chemical formula while others are also written in complicated chemical formulas.

A national convention occurs every four years. Who is responsible for organizing this event? A. national party chairperson B. speaker of the house C. majority leader D. vice president

Answers

A national convention occurs every four years, so political parties can nominate their presidential bet for the coming elections. This signifies the end of a presidential primary season. It is convened by the political party's national committee, and is headed by the A. national party chairperson.

Which of the following statements is not correct?0.20 mole of O2 = 6.4 g
0.75 mole of H2CO3 = 47 g
3.42 moles CO = 95.8 g
4.1 moles Li2O = 94 g

Answers

Answer:

4.1 moles Li2O = 94 g (incorrect)

4.1 mole of Li2O = 122.6g(correct)

Explanation:

1. Molar mass of O2 = 32

0.2 mole of 32 = 0.2×32 = 6.4g (correct)

2. Molar mass of H2CO3 = 62.03

0.75 mole of 62.03 = 0.75×62.03 = 46.5g (47 is correct)

3. Molar mass of CO = 28

3.42 moles of 30 = 3.42×28 = 95.76 (95.8 is correct)

4. Molar mass of Li2O = 29.9

4.1 mole of Li2O = 4.1×29.9 = 122.59g (94g is incorrect)

Answer:

It's 4.1 moles Li2O = 94 g on Odyssey ware

What is the mass of an unknown whose volume is 0.45L and whose density is 94kg/L

Answers

I got you my friend.

mass = 42.3 kg

If you want step by step let me know in the comments and ill post a step by step in the comment section.

After burning for three hours, a candle has lost half of its mad. Explain why this example does not violate the law of conversation of mass.

Answers

The law of mass conservation depicts that the mass of reactants is equal to the mass of products, so the mass of the candle is changed from solid state to gaseous state which have the same mass of the wasted candle.

What is the law of conversation of mass ?

According to the law of conservation of mass, it has been described that the mass neither formed nor destroyed, it can only transferred from one state to another state.

Due to changes in states of matter, the mass is only rearranged and changed, so during a chemical reaction, the mass of the reactants and the products are same in a closed reaction.

There for when burning the candle it only changes its state from solid to gaseous state that follow the law of conservation of mass.

Learn more about law of conversation of mass , here:

brainly.com/question/16756626

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well from my teacher when we did this experiment she said that I would most likely will violate it unless its covered up!

I really hope I helped thx!

How are energy and mass connected during the formation of an atom?

Answers

Energy and mass are required during the formation of an atom. The binding of an atom is the attraction of the forces. So, the mass defects and energies of the protons and neutron are being released to form the nucleus.

Answer:

Energy is absorbed, so the mass is reduced

Explanation:

The relationship between the mass and the energy is given by Einstein formula as : m is the mass of an atom c is the speed of light When an atom is formed, the energy gets absorbed. As a result mass will decrease as per Einstein's equation.

So, the correct option is (c) "Energy is absorbed, so the mass is reduced".

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.During the combustion of methane (CH4), one mole of methane gas combines with two moles of oxygen gas (O2) to produce one mole of carbon dioxide gas (CO2) and two moles of water vapor. Which of the following chemical equations correctly represents the combustion of methane described above?

Why are plant cells and animal cells diffrent?

When a substance dissolves, it undergoes a _____.