Number 8

3 marks · Normal

A container has a mass of 2250 g and a volume of 3 dm³. Calculate the density of the substance in kg/m³.

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750 kg/m³ (±1)

Also accept: 750 kg/m³

Common mistakes: 0.75 kg/m³; 750 g/m³

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Marking points

M1 · 1 mark · Converts 2250 g to kg (2.25 kg) or 3 dm³ to m³ (0.003 m³).

M2 · 1 mark · Uses the density formula with correct units: density = mass/volume.

A1 · 1 mark · Final answer: 750 kg/m³.

Worked solution

First, convert grams to kilograms:

Next, convert dm³ to m³:

Use the formula density = mass / volume: