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mylen [45]
3 years ago
10

A 642 mL sample of oxygen gas at 23.5°C and 795 mm Hg, is heated to 31.7°C and the volume of the gas expands to 957 mL. What is

the new pressure in atm?
A) 0.683 atm
B) 0.932 atm
C) 3.05 atm
D) 5.19 atm
Chemistry
1 answer:
Alexus [3.1K]3 years ago
3 0
The correct answer is approximately 0.7 atm, which is close to A) 0.683 atm.
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Chemists investigated an unknown substance and found it to have the following characteristics:
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The answer is option C.

That is it is a heterogeneous mixture.

Heterogeneous mixture have the following properties:

1. Different components could be observed in the substance.

2. Different samples of the substance appeared to have different proportions of the components.

3.The components could be easily separated using filters and sorting.


7 0
3 years ago
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What is the solute when stirring salt in water until the salt disappears?
Umnica [9.8K]

Answer:

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The solvent is the substance dissolving the solute.

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Explanation:

The salt is the solute.

3 0
2 years ago
What is the redox half equation for 3Ag2S + 2Al --> 6Ag + Al2, and identity which material is oxidized and which is reduced?
marta [7]

Answer:

Al is oxidized while Ag is reduced.

Explanation:

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3Ag2S + 2Al --> 6Ag + Al2S3

Oxidation half equation;

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Reduction half equation;

6Ag^+ + 6e -------> 6Ag

Overall redox reaction equation;

2Al + 6Ag^+ ----->2Al^3+ + 6Ag

Hence; Al is oxidized while Ag is reduced.

5 0
3 years ago
8. As the temperature of a mixture increases, one part of the mixture may 2 points
disa [49]

Answer:

It's false

Explanation:

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8 0
2 years ago
An object has a mass of 20g and occupies a volume of 40 ml. Calculate the Density of the object.
Vsevolod [243]

Answer:

<h3>The answer is 0.5 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

From the question we have

density =  \frac{20}{40}  \\

We have the final answer as

<h3>0.5 g/mL</h3>

Hope this helps you

3 0
3 years ago
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