Question

A 250 ml flask and stopper have a mass of 110.525 g. A 50 ml sample of gasoline is pipetted into the flask, giving a total mass of 146.770 g. Find the density of the gasoline

Answer 1

Density is a value for mass, such as kg, divided by a value for volume, such as m3. Density is a physical property of a substance that represents the mass of that substance per unit volume. We calculate as follows:

Density = mass of gasoline/ volume of gasoline = (146.770 g -110.525 g ) / 50 ml = 0.7249 g/mL

Answer 2

Answer: The density of gasoline will be 1.4 g/ml.

Explanation:

Density is defined as the mass contained per unit volume.

$Density=\frac{mass}{Volume}$

Given : Mass of gasoline = (mass of gasoline +mass of flask +mass of stopper) -  (mass of stopper +mass of flask) = (146.770 - 110.525) grams = 36.245 grams

Volume of gasoline = 50 ml

Putting in the values we get:

$Density=\frac{36.245g}{25ml}=1.4g/ml$

Thus density of gasoline will be 1.4 g/ml