Question

The mass of iron in planet Earth is 2.090 x 1024 kg.

Given that the Earth has a mass of 5.972 x 1024 kg, find the
percentage of the Earth's mass that is iron.

Answer 1

Percentage = 35%

Explanation:

Given the following data;

Mass of iron, I = 2.090 x 10^24 kg

Mass of Earth, E = 5.972 x 10^24 kg

To find the percentage mass of iron on Earth;

`Percentage = \frac {I}{E} * 100`

Substituting into the formula, we have;

`Percentage = \frac {2.090 * 10^(24)}{5.972 * 10^(24)} * 100`

`Percentage = 0.350 * 100`

Percentage = 35%