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.

To work out the volume of something from its density, use the compound measures triangle: mass over density and volume. To find volume that the beaker holds, divide the mass by the density. V = (388.15 - 39.09)/1. V = 349.06g/cm3. To find the weight of the beaker and the contents, first work out the weight (mass) of the mercury, with this formula: mass = d x v. M = 13.5 x 349.06. M = 4712.31. Then add on the weight of the beaker (39.09g). The total weight is 4751.40g.

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