An empty beaker weighs 39.09 g
a)when completely filled with water, the breaker and its contents have a total mass of 388.15 g. what volume does the beaker hold? use d=1.00 g/ml as the density of the water.
2)how much would the beaker and its contents weigh if it was completely filled with mercury? the density of mercury is d=13.5 g/ml.

Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?