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kow [346]
3 years ago
9

What is a mol in chemistry

Chemistry
1 answer:
Snowcat [4.5K]3 years ago
6 0
Molecular weight it stands for molecular weight






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24. The air in a small 250 cm birthday balloon is at a pressure of 760 torr. A boy sits on it at
kvv77 [185]

Answer:

1.14atm

Explanation:

Given parameters:

V1 = 250cm³ ;

              1000cm³ = 1dm³;  so this is 0.25dm³

P1  = 760torr

            760torr  = 1atm

       

V2  = 220cm³ ; 0.22dm³

Unknown:

New pressure = ?

Solution:

To solve this problem, we apply Boyle's law and we use the expression below:

       P1 V1 = P2V2

The unknown is P2;

            1 x 0.25  = P2 x 0.22

                 P2  = 1.14atm

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Juan observes a material in the rocks of a hilluan hammers off a piece and then examines the pieces with a hana tena He
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Answer:

I definitely think he mostly observed that it was clear in color.

Explanation:

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Answer:

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Sodium is much more apt to exist as a cation than is chlorine. this is because __________. sodium is much more apt to exist as a
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<span>Answer: Correct answers are- Electron affinity decreases; Cl has 7 valence electrons but Na has only 1. So Na is going to lose its e, Cl is going to gain an e.</span>
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Explain what helps convert non-rich oxygen blood cells back to oxygen rich cells?
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Answer:

As blood travels through the body, oxygen is used up, and the blood becomes oxygen poor. Oxygen-poor blood returns from the body to the heart through the superior vena cava (SVC) and inferior vena cava (IVC), the two main veins that bring blood back to the heart.

Explanation:

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