Full Question: The internal energy of a gas inside a piston decreases by 195 J. If 52 J of work is done by the gas, how much energy is transferred by heat? Does heat add energy to or remove energy from the gas?
here are the equations we can use:
(-m1)(C1)(ΔT1)=(m2)(C2)(ΔT2)
Q=mcΔT
Q=mL
ΔU=Q-W
W=PΔV
There might be others I am forgetting...sorry
Please indicate which equation you use and why you used it. Thanks!
here are the equations we can use:
(-m1)(C1)(ΔT1)=(m2)(C2)(ΔT2)
Q=mcΔT
Q=mL
ΔU=Q-W
W=PΔV
There might be others I am forgetting...sorry
Please indicate which equation you use and why you used it. Thanks!
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The first law of thermodinamic :
ΔU = Q - W --> W = 52 J ΔU = - 195 J
Q = ΔU + W
= -195 + 52 = -143 J ( heat to remove energy from the gas)
ΔU = Q - W --> W = 52 J ΔU = - 195 J
Q = ΔU + W
= -195 + 52 = -143 J ( heat to remove energy from the gas)