Calculate the heat change at 100°C to condense 50 g water vapor. Was energy released or absorbed by the water vapor? Show your work.

Which substance has non polar covalent bonds

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa

Equal numbers of moles of he(g), ar(g), and ne(g) are placed in a glass vessel at room temperature. if the vessel has a pinhole-sized leak, which of the following will be true regarding the relative values of the partial pressures of the gases remaining in the vessel after some of the gas mixture has effused?