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Morgarella [4.7K]
3 years ago
12

Which of the following would release the most heat upon cooling from 75*C to 50*C?

Chemistry
2 answers:
Katyanochek1 [597]3 years ago
7 0

Answer:

A. 10g H2O (l)

On edge.nuity

Tresset [83]3 years ago
4 0
The answer should be 10g.
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horsena [70]

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Explanation:

3 0
3 years ago
A mixture of 14.2 g of H2 and 36.7 g of Ar is placed in a 100.0 L container at
TiliK225 [7]

a) The total pressure of the system is  1.79 atm

b) The mole fraction and partial pressure of hydrogen is  0.89 and 1.59 atm respectively

c) The mole fraction and the partial pressure  of argon is 0.11 and 0.19 atm.

<h3>What is the total pressure?</h3>

We know tat we can be able to obtain the total pressure in the system by the use of the ideal gas equation. We would have from the equation;

PV = nRT

P = pressure

V = volume

n = Number of moles

R = gas constant

T = temperature

Number of moles of hydrogen = 14.2 g/2g = 7.1 moles

Number of moles of Argon = 36.7 g/40 g/mol

= 0.92 moles

Total number of moles =  7.1 moles + 0.92 moles = 8.02 moles

Then;

P = nRT/V

P = 8.02 * 0.082 * 273/100

P = 1.79 atm

Mole fraction of hydrogen = 7.1/8.02 = 0.89

Partial pressure of hydrogen =  0.89 * 1.79 atm

= 1.59 atm

Mole fraction of argon = 0.92 / 8.02

= 0.11

Partial pressure of argon = 0.11  *  1.79 atm

= 0.19 atm

Learn more about partial pressure:brainly.com/question/13199169

#SPJ1

3 0
1 year ago
Why do your ears “pop” in an airplane?
tino4ka555 [31]
Pressure buildup in ur ear
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What happens to the number of valence electrons as you move up a group
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Ionization Energy: DOWN a Group: Ionization energy DECREASES as you go DOWN a Group because the farther the valence electrons are from the nucleus (pulling power of the protons) the less energy it costs another atom to steal them
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Which statement best explains what causes the phase change from solid ice to liquid water?
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It would be c because it has to get hot so it is absorbing the heat not releasing it
6 0
3 years ago
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