70 calories of heat required to raise the temperature of 2 moles of an ideal gas at constant pressure from `30^@Cto 35^@C.` The amount of heat required (in calories) to raise the temperature of the same gas through the same range `(30^@C to 35^@C)` at constant volume is:

Explanation

To solve the problem of finding the amount of heat required to raise the temperature of 2 moles of an ideal gas at constant volume from \(30^\circ C\) to \(35^\circ C\), we can follow these steps:

### Step 1: Understand the given information
We know that the heat required at constant pressure (Q_p) to raise the temperature of 2 moles of the gas from \(30^\circ C\) to \(35^\circ C\) is 70 calories. The change in temperature (\(\Delta T\)) is:
\[ \Delta T = 35^\circ C - 30^\circ C = 5^\circ C \]

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