Question 964: Thermodynamics & KTG

Question

The amount of heat energy required to raise the temperature of 1 g of Helium at NTP, from T
1
K to T
2
K is

Accepted Answer

From first law of thermodynamics
$$\Delta Q = \Delta U + \Delta W = {3 \over 2}.{1 \over 4}R\left( {{T_2} - {T_1}} \right) + 0$$
$$ = {3 \over 8}{N_a}{K_B}\left( {{T_2} - {T_1}} \right)$$    $$\left[\because{K = {R \over N}} \right]$$

Answer

$${3 \over 4}{N_a}{k_B}\left( {{T_2} - {T_1}} \right)$$

Answer

$${3 \over 4}{N_a}{k_B}\left( {{{{T_2}} \over {{T_1}}}} \right)$$

Answer

$${3 \over 8}{N_a}{k_B}\left( {{T_2} - {T_1}} \right)$$

Answer

$${3 \over 2}{N_a}{k_B}\left( {{T_2} - {T_1}} \right)$$

Thermodynamics & KTG

The amount of heat energy required to raise the temperature of 1 g of Helium at NTP, from T 1 K to T 2 K is

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