Helium gas is heated at constant pressure by $10^{0} C$ $10^0 C$ . The percentage of heat energy supplied which is used in increasing the internal energy of the gas is? (A) 60% (B) 71% (C) 75% (D) 100%

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Helium gas is heated at constant pressure by $10^{0} C$ $10^0 C$ . The percentage of heat energy supplied which is used in increasing the internal energy of the gas is? (A) 60% (B) 71% (C) 75% (D) 100%

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Answer 1 · 2018-01-13T05:23:16

60 %

Explanation:

For isobaric process ,total heat energy is expressed as $n C p d t$ $n Cp dt$
And internal energy as $n C v d t$ $n Cv dt$
So, internal energy is $\frac{n C v d t}{n C p d t}$ $(n Cv dt)/(n Cp dt)$ times of total energy supplied i.e $\frac{C v}{C p}$ $(Cv)/(Cp)$
Helium being a monoatomic gas its gamma value is $\frac{5}{3}$ $5/3$ = $\frac{C p}{C v}$ $(Cp)/(Cv)$
Hence, the percentage is $(\frac{3}{5}) \cdot 100$ $(3/5)*100$ or 60 %

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Helium gas is heated at constant pressure by $10^{0} C$ $10^0 C$ . The percentage of heat energy supplied which is used in increasing the internal energy of the gas is? (A) 60% (B) 71% (C) 75% (D) 100%

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Explanation:

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Helium gas is heated at constant pressure by100C10^0 C. The percentage of heat energy supplied which is used in increasing the internal energy of the gas is? (A) 60% (B) 71% (C) 75% (D) 100%

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Explanation:

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Helium gas is heated at constant pressure by $10^{0} C$ $10^0 C$ . The percentage of heat energy supplied which is used in increasing the internal energy of the gas is? (A) 60% (B) 71% (C) 75% (D) 100%