What is the molality of a solution of naphthalene dissolved in chloroform if the solution has a boiling point of 63.2 °C?

The density of an unknown gas at 98°c and 740 mmhg is 2.50 g/l. what is the molar mass of the gas with work showed?

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.