Question

A student finds the mass of an empty 50-mL beaker to be 36.52 g. She then uses a 25.0- mL volumetric pipet to transfer a sample of an organic liquid to the beaker. The beaker and its contents now have a mass of 53.25 g. what is the density of the liquid?

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Answer 1

density = 0.669 but see below.

Step-by-step explanation:

Mass of Beaker and the liquid = 53.25

Mass of just the beaker = 36.52 Subtract

Mass of the liquid 16.73

Density = mass / volume

mass = 16.73

volume = 25.0 mL

You have to assume that the pipette was filled right to the top.

Density = 16.73 / 25.0 = 0.6692 grams / mL

Since this only has 3 places of accuracy, the answer should be 0.669