An empty graduated cylinder has a mass of 34.90 g. The cylinder is filled to the 9.40 mL mark with a liquid. The mass the cylinder with liquid is found to be 47.99 g. What is the density of the liquid?

2 Answers
anor277
Sep 28, 2016

ρ> 1⋅g⋅mL−1.

Explanation:

Density = MassVolume = 47.99⋅g−34.90⋅g9.40⋅mL = ??g⋅mL−1.

Meave60
Sep 28, 2016

The density is 1.39 g/mL rounded to three signicant figures.

Explanation:

Volume of liquid is 9.40 mL

To determine mass, subtract the mass of the empty cylinder from the mass of the cylinder plus liquid.

47.99 g−34.90 g=13.09 g

The mass of the liquid is 13.09 g.

Density is mass per unit volume. The equation for density is

density=massvolume

In this question, volume is measured in milliliters, mL, and mass is measured in grams, g.

Substitute your known values into the density equation and solve.

density=13.09g9.40mL=1.39 g/mL rounded to three significant figures

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