Chapter 19563P19.51(a)ρ=mVand dmVdV=−2For very small changes in V and , this can be expressed as∆∆∆ρρβmVVVT.The negative sign means that any increase in temperature causes the density to decreaseand vice versa.(b)For water we have ==−°− °=× °−−∆∆T100000999710040510...gcmCCC333ejaf.*P19.52The astronauts exhale this much CO2:nmM⋅FHGIKJFHGIKJ=samplekgastronaut dayg1 kgastronautsdaysmol44.0 gmol1091000371520.afbg.Then 520 mol of methane is generated. It is far from liquefaction and behaves as an ideal gas.PnRTV⋅−×=×−52027345150 10657 103
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