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4 years ago

A sample of gas occupies 17 mL at -122°C. What volume does the sample occupy at 70°C?

Chemistry

1 answer:

aev [14]4 years ago

7 0

Answer: 38.6 ml

Explanation:

Charles' Law: This law states that volume is directly proportional to the temperature of the gas at constant pressure and number of moles.

$V\propto T$ (At constant pressure and number of moles)

$\frac{V_1}{T_1}=\frac{V_2}{T_2}$

$V_1$ = initial volume = 17 ml

$V_2$ = final volume = ?

$T_1$ = initial temperature = $-122^0C=273+(-122)=151K$

$T_2$ =final temperature= $70^0C= 70+273=343K$

$\frac{17}{151}=\frac{V_2}{343}$

$V_2=38.6ml$

Thus final volume is 38.6 ml at 70 $^0C$

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<h3>Nomenclature of Organic compounds</h3>

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Answer:

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Explanation:

A galvanic cell is a device that uses redox reactions to convert chemical energy into electrical energy. The chemical reaction used is always spontaneous.

Oxide-reduction reactions, also called redox, involve the transfer or transfer of electrons between two or more chemical species. In these reactions two substances interact: the reducing agent and the oxidizing agent.

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So: E°cell=Ereduction - Eoxidation

Or what is the same E°cell=Ecathode - Eanode because the reduction always occurs in the cathode and oxidation in the anode.

E°cell=0.80 V - (-0.76) V

E°cell= 1.56 V

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