Which objects refract light? (Select all that apply.)

How heavy is thanos? a) 3000 lbs b) all of it c) the price of tea in china d) heavy enough

How do you determine the percent yield of a chemical reaction

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?