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70 calories of heat are required to raise the temperature of two moles of an ideal gas at constant pressure from `30^oC` to `35^oC`. The amount of heat required (in calories) to raise the temperature of the same gas through the same range `(30^oC` to `35^oC)` at constant volume is
A. |
30 |
B. |
50 |
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C. |
70 |
D. |
90 |