Chemistry Question Calculation?

Question

An empty Erlenmeyer flask weighs 241.3 g. When filled with water(d=1.00 g/cm^3), the flask weighs 489.1 g.

What is the flask volume?

How much would the flask weigh when filled with chloroform (d=1.48g/cm^3)

Answer 1

An empty Erlenmeyer flask weighs 241.3 g. When filled with water(d=1.00 g/cm^3), the flask weighs 489.1 g.

489.1 - 241.3 = 247.8 grams of water fills the flask

247.8 g H2O @ 1 g/cm3 = 247.8 cm3 is the volume of the flask

but you ought to consider rounding your answer off to 3 sig figs, since the density only had 3

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How much would the flask weigh when filled with chloroform (d=1.48g/cm^3)

247.8 cm3 @ 1.48 g/cm3 = 366.7 grams of chloroform will fill the flask

366.7 + 241.3 = 608 grams

your answer is: the flask weigh when filled with chloroform  will weigh 608 grams (3sigfigs)