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3 years ago

What process will decrease the level of co2 in the atmosphere

Chemistry

1 answer:

ratelena [41]3 years ago

8 0

Photosynthesis will decrease the level of co2 in the atmosphere

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How does the air on a hot day compare with the air on a cold day?

MrMuchimi

Air on a hot day translates to hot air and air on a cold day translates to cold air. The hot air usually have more energy due to particles being more excited by the heat.

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3 years ago

What are two things that happened as a blood passes the lungs?

amm1812

Answer:

blood travels to the pulmonary arteries

Explanation:

This is called the pulmonary circulation. From your pulmonic valve, blood travels to the pulmonary arteries and eventually to tiny capillary vessels in the lungs.

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3 years ago

What happens to the energy that is stored in cells? Check all that apply

kobusy [5.1K]

It is released slowly.
It is released in a series of reactions.
It is used by cells for repair and growth.

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3 years ago

Forty litres of a mixture of methane and nitrogen requires 24 L of pure oxygen for complete combustion. The percentage of methan

Marat540 [252]

Answer:

$\boxed{30 \, \%}$

Explanation:

We can use Gay-Lussac's Law of Combining Volumes to solve this problem.

Gases at the same temperature and pressure react in the same ratios as their coefficients in the balanced equation.

1. Write the chemical equation.

Ratio: 1 L 2 L

CH₄ + 2O₂ → CO₂ + 2H₂O

V/L: 24

2. Calculate the volume of O₂.

According to Gay-Lussac, 1 L of CH₄ reacts with 2 L of O₂.

Then, the conversion factor is (1 L CH₄/2 L O₂).

$\text{Volume of CH}_{4} = \text{24 L O}_{2} \times \dfrac{ \text{1 L CH}_{4} }{\text{ 2 L O}_{2}}= \text{12 L CH}_{4}$

3. Calculate the percentage of methane

$\text{\% Methane } = \dfrac{\text{12 L}}{\text{40 L}} \times 100 \%= \mathbf{30 \, \%} \\\\\text{The percentage of methane in the mixture is }\boxed{\mathbf{30 \, \%}}}$

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3 years ago

The energy released by a nuclear fusion reaction is produced when

Igoryamba

Answer:

Explanation:

energy produced in nuclear fusion or even fission is due to mass defect and it can be calculated by Einstein equation e=mc2

8 0

3 years ago