Iii. The equation that describes the change in temperature of a solvent due to a solute is ΔTb = i Kb molality. How much salt would one need to add to 1 kg water to change the boiling temperature by 5°C? Give your answer in moles. Show your work. (Kb = ) for water and i = 2 for NaCl.) (2 points)

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Drug abuse will not lead to physical and psychological dependence. true or false ?