1)A 55 67 g sample of a substance is initially at 22 7 C Afterabsorbi...

1)A 55.67 g sample of a substance is initially at 22.7 Â°C. After absorbing 2847 J...

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Chemistry

1)A 55.67 g sample of a substance is initially at 22.7 Â°C. Afterabsorbing 2847 J of heat, the temperature of the substance is 132.2Â°C. What is the specific heat (c) of the substance?
2)An 80.0-gram sample of a gas was heated from 25 Â°C to 225 Â°C.During this process, 346 J of work was done by the system and itsinternal energy increased by 7785 J. What is the specific heat ofthe gas?
3)How much work must be done on a system to decrease its volumefrom 13.0 L to 5.0 L by exerting a constant pressure of 4.0atm?
4)If a system has 5.00 Ã— 102 kcal of work done to it, andreleases 5.00 Ã— 102 kJ of heat into its surroundings, what is thechange in internal energy of the system?

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4.1 Ratings (747 Votes)

Q m c T Q quantity of heat in joules J m mass of the substance acting as the environment in grams g c specific heat capacity 419 for H2O in Jg oC T change in See Answer

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