Question

What is the mass of an object that has a density of 1.3 g/cm3 and a volume

of 2 cm3? (The density of an object has the equation d.)

Answer 1

The mass of the object is 2.6 grams

Explanation:

The density of an object is the ratio between its mass and its volume

The equation of the is d =
`(m)/(V)` , where

• m is the mass

• V is the volume

Let us use this equation to solve the question

∵ An object has a density of 1.3 g/cm³

∴ d = 1.3 g/cm³

∵ Its volume is 2 cm³

∴ V = 2 cm³

→ Substitute them in the equation of the denisty above

∵ 1.3 =
`(m)/(2)`

→ Multiply both sides by 2

∴ 2 × 1.3 = 2 ×
`(m)/(2)`

∴ 2.6 = m

∴ The mass of the object is 2.6 grams