14.2 Part A If 1.90×105 J of energy is supplied to a flask of liquid oxygen at -183∘C, how much oxygen can evaporate? Th

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14.2
Part A
If 1.90×105 J of energy is
supplied to a flask of liquid oxygen at -183∘C, how much
oxygen can evaporate? The heat of vaporization for oxygen
is 210 kJ/kg.
Express your answer to two significant figures and
include the appropriate units.
m =
Part B
One end of a 70-cm-long copper rod with a diameter
of 2.6 cm is kept at 490 ∘C, and the other is
immersed in water at 22 ∘C.
Calculate the heat conduction rate along the
rod.
Express your answer to two significant figures and
include the appropriate units.
Qt =