A cylinder of fixed capacity (of 44.8 L) contains 2 moles of helium gas at STP .What is the amount of heat needed to raise the temperature of the gas

Question

A cylinder of fixed capacity (of 44.8 L) contains 2 moles of helium gas at STP .What is the amount of heat needed to raise the temperature of the gas

A cylinder of fixed capacity (of 44.8 L) contains 2 moles of helium gas at STP .What is the amount of heat needed to raise the temperature of the gas in the cylinder by `20^(@)C` ? `("Use"R=8.31J"mol"^(-1)K^(-1))`
A. 996 J
B. 831 J
C. 498 J
D. 374 J

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

Related Questions

Calculate the change in entropy for the process : \( H _{2} O _{\left(\text {liq, } 20^{\circ} C , 1 atm \right)} \) to \( H _{2} O _{\left.\text {(gas, } 250^{\circ} C , 1 atm \right)} \) You are given, heat capacity of water \( ( \) liq \( )=75.6 JK ^{-1} \cdot mol ^{-1} \) Heat capacity of water \( ( \) vap \( )=36.2 JK ^{-1} mol ^{-1} \) Heat of vaporization of \( H _{2} O \) at \( 100^{\circ} C \) and \( 1 atm 40.85 JK mol ^{-1} \)

2 Answers 4 Views

One mole of an ideal monoatomic gas requires 207 J heat to raise the temperature by 10 K when heated at constant pressure. If the same gas is heated a

2 Answers 8 Views

310 J of heat is required to rise the temperature of 2 moles of an ideal gas at constant pressure from `25^(@)C` to `35^(@)C`. The amount of heat requ

2 Answers 4 Views

Two moles of helium are mixed with n moles of hydrogen. The root mean spure (rms) speed of the gas molecules in the mexture is `sqrt2` times the speed

2 Answers 4 Views

when 22.4 L of `c_(4) H_(8) ` at STP is burnt completely , 89.6 L of `CO_(2) ` gas at STP and 72 g water are Produced . The volume of the oxygen gas a

2 Answers 6 Views

Onemole of an ideal gas requires 135 J of heat to raise its temperature by 15 K when heated at constant pressure. If the same gas is heated at constan

2 Answers 5 Views

743 J of heat energy is needed to raise the temperature of 5 moles of an ideal gas by 2 K at constant pressure. How much heat energy is needed to rais

2 Answers 5 Views

If 294 joules of heat energy is required to raise the temperature of 2 moles of an ideal gas from `30^(@)C` to `35^(@)C` at constant pressure, then th

2 Answers 7 Views

One mole of an ideal gas requires 207 J of heat to raise the temperature. If the same gas is heated at constant volume to raise the temperature by the

2 Answers 4 Views

The temperature of 2 moles of a gas is changed from `20^(@)C` to `30^(@)C` when heated at constant volume. If the molar heat capacity at constant volu

2 Answers 4 Views

Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - C
Since , the volume of cylinder is fixed and helium is a monoatomic gas.
The internal energy = `muCvDeltaT`
`U=(1)/(2)fmuRDeltaT" " [thereforeC_(v)=(1)/(2)fR]`
`U=(1)/(2)xx3xx2xx8.31xx20=20=498.6J`
Carnot Engine and Refrigerator

5 views Answered 2023-02-05 15:29