Laboratory work and Chapter II review
Answers are for parents and teachers.
1
2 mol of monatomic gas is heated isochorically by 50 K. Q (J, approximately)?
about 1250 J
2
Q (kJ) to heat 2 kg of water from 20 °C to 100 °C? c = 4200
672
3
A gas is compressed by 0.005 m³ at 400 kPa. Work done on the gas (J)?
2000
4
Write the three most important formulas of the chapter and their conditions of use.
For example: Q = cmΔt (no change of state), Q = ΔU + A (any process), A = pΔV (p = const).
5
Why is no real heat process perfectly reversible?
There is always friction and heat exchange: heat goes to the cooler surroundings and does not return by itself.