10 kg of liquid water is in a container maintained at atmospheric pressure, 101325 pa. the water is initially at 373.15 k, the boiling point at that pressure. the latent heat of water -> water vapor is 2230 j/g. the molecular weight of water is 18 g. 103 j of heat is added to the water.1) how much of the water turns to vapor? answer = mass(vapor)= .4482) by how much did the gibbs free energy change? gfinal-ginitial= ? 3) by how much did the entropy change? sfinal-sinitial= ? 4) by how much did the total (liquid +vapor) enthalpy h=u+pv change? hfinal-hinitial= ? 5) by how much did the volume change, treating the vapor as an ideal gas and the liquid as having negligible volume? vfinal-vinitial= ? 6) by how much did the total energy (liquid +vapor) change? ufinal-uinitial= ?

1. what is the relationship between wavelength and the penetrating power of an electromagnetic wave? a) the penetrating power has no relationship to the wavelength. b) the penetrating power increases as the wavelength increases. c) the penetrating power decreases as the wavelength increases. d) the penetrating power decreases as the wavelength decreases. 2. as ice melts and turns into water, the speed of sound through the material would most likely do what? justify your answer. a) the speed would not change because the material is always water. b) the speed of sound would increase because the density of water is less than that of ice. c) the speed of sound would increase because energy is added to ice in order to make it melt. d) the speed of sound would decrease because sound travels faster through solids than liquids. 3.which of these waves need a medium to travel through? a) sound b) x-rays c) infrared rays d) visible light