객관식An unknown diatomic gas has a density of 1.250 g/L at STP. What is the identity of the gas?107views
객관식A block has a mass of 250 g and a volume of 200 cm^3. Given that the density of water is 1.00 g/cm^3, what is the density of the block?101views
객관식A liquid in the lab has a density of 1.25 g/cm^3. What is the mass, in grams, of 80.0 mL of the liquid?121views
객관식What is the length of the side (in cm) of a cube that has a density of 12.6 g/ml and a mass of 7.65 g?111views
객관식Which statement best explains how an object's density determines whether it will sink or float in water?111views
객관식What is the density (in g/L) of a sample of N_2 gas at 70.0 °C and 2.50 atm pressure? (Use R = 0.0821 L·atm·mol^{-1}·K^{-1})113views
객관식A student measures 25.0 mL of an unknown liquid œÅunknown and finds its mass to be 19.5 g. What is the density of œÅunknown?105views