Question

What two quantities must be known to calculate the density of a sample of matter?

a.mass and volume
b.length and mass
c.size and weight
d.weight and volume

Answer 1

remember the formula for density:

d = \frac{m}{v}

where d is density, m is mass, and v is volume.

Therefore, B. mass and volume is needed to determine the density

Answer 2

The answer is A, mass and volume.

The equation for density, ρ, is ρ = m/V. m is mass and V is volume.