Thermodynamics · Laws of thermodynamics
When 300 J of heat given to an ideal gas with its temperature raises from C to C keeping its volume constant. The mass of the gas is (approximately) g. ( J/mol.K).
Flawed question. Asks for the mass of the gas but no molar mass is given (only mol follows); the printed key 481 matches no stated quantity, so there is no evident intended version. It is shown for completeness and is left out of practice tests.
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See the full 24 Jan 2026, Shift 2 paper
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