Question

A 150g bottle has a mass of 300g when filled with water and 310g when filled with an unknown liquid. What is the density of the unknown liquid?

Answer 1

Solution.

$m(H2O) = 300 \ g - 150 \ g = 150 \ g$

$V(H2O) = \frac{m(H2O)}{\rho(H2O)} = 150 \ cm^3$

$m(X) = 310 \ g - 150 \ g = 160 \ g$

V(H2O) = V(X)

$\rho(X) = \frac{m(X)}{V(X} = 1.07 \ \frac{g}{cm^3}$

Answer:

$\rho(X)= 1.07 \ \frac{g}{cm^3}$