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Neko [114]
3 years ago
8

Can you please help. I don't know how to do it.

Chemistry
2 answers:
Gwar [14]3 years ago
6 0
The Answer is 35 :)
hey lol
erma4kov [3.2K]3 years ago
5 0

Answer:35

Explanation:because 10x10

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If a decrease in temperature accompanies a reaction,what occurred? energy was destroyed energy was restored energy was created e
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7 0
3 years ago
Read 2 more answers
2. A sample of helium gas has a volume of 200.0 mL at 0.960 atm. What pressure, in atmospheres, is needed to reduce the volume a
brilliants [131]

Answer:

3.840 atm

Explanation:

We use Boyle's law, which relates the pressure (P) and the volume (V) of a gas at a constant temperature. The change from initial P and V (P₁ and V₁) to final P and V (P₂ and V₂) is expressed as:

P₁V₁ = P₂V₂

We have the following data:

P₁= 0.960 atm

V₁= 200.0 mL

V₂ = 50.0 mL

Thus, we introduce the data in the equation and calculate the final pressure P₂:

P₂ = P₁V₁/V₂= (0.960 atm x 200.0 mL)/50.0 mL = 3.840 atm

Therefore, a pressure of 3.840 atm is needed to reduce the volume of the gas from 200.0 mL to 50.0 mL.

4 0
3 years ago
According to the chemical formula shown below, all of the following elements are found in phosphoric acid EXCEPT
slava [35]
I think C but it could be B as well
4 0
3 years ago
Why do all living things need nitrogen?
Vadim26 [7]

Answer:

Option A. to build new cells.

Explanation:

All living things need nitrogen for the production of new cell because nitrogen is the main structural component of the cell. Protein is made up of amino acid and amino acid made of nitrogen. Without nitrogen atom, enzymes formation is impossible and we know that enzymes are necessary to speed up the chemical process. So nitrogen is very important for living organisms.

4 0
4 years ago
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