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RUDIKE [14]
3 years ago
9

120.0 liters of a gas are prepared at a pressure of 300.0 mm Hg and a temperature of 100.0 °C. The gas is placed into a tank und

er high pressure. When the tank cools to 30.0 °C, the pressure of the gas is 30.0 mm Hg. What is the volume of the gas?
A.674.8 L
B.774.8 L
C.874.8 L
D.974.8 L
Chemistry
1 answer:
rewona [7]3 years ago
7 0

Answer:

Is 674.8 L

Explanation:

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Which shows the formula for an organic acid?
Inga [223]

Answer:

A

Explanation:

CH3CH2COOH- Propanoic Acid

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4 years ago
What is the ph of a 0.014 M HCL solution?
Allushta [10]

Answer:

pH = 1.853

Explanation:

For every mole of hydrochloric acid, one mole of hydronium ion is required. Thus, in order to neutralize 0.014 moles of HCL, 0.014 moles of hydronium is required.

[H_3O^+] = [HCl] = 0.014

pH  = -log [H^+] = -log [H_3O^+]

Substituting the available values in above equation, we can say that   the pH of the solution is equal to

- log (0.014)

pH = 1.853

pH of a 0.014 M HCL solution = 1.853

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3 years ago
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Answer:

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3 years ago
Chlorofluorocarbons (CFCs) are no longer used as refrigerants because they destroy the ozone layer. Trichlorofluoromethane (CCl₃
Daniel [21]

Answer:

The molar entropy of the evaporation of Trichlorofluoromethan is 83.516 J/molK.

Explanation:

Entropy :It is defined as amount of energy which is unable to do work or the measurement of randomness or disorderedness in a system.

S=\frac{Q}{T(Kelvins)}

Molar heat of molar vaporization of Trichlorofluoromethane = 24.8 kJ/mol

Temperature at which Trichlorofluoromethan boils , T= 296.95 K

The molar entropy of the evaporation of Trichlorofluoromethan :

=\frac{24.8 kJ/mol}{296.95 K}=0.083516 kJ/mol K = 83.516 J/molK

The molar entropy of the evaporation of Trichlorofluoromethan is 83.516 J/molK.

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