If calcium makes up 3.4% by mass of Earth's crust, the grams of calcium present if a sample of Earth's crust has a mass of 1.5 g is 0.051 g.
How to calculate mass?
The mass of an element in a sample can be calculated by multiplying the percent abundance of that element by the mass of sample.
According to this question, calcium makes up 3.4% by mass of Earth's crust. If a sample of Earth's crust has a mass of 1.5 g, the mass of calcium present can be calculated as follows:
mass of calcium = 3.4/100 × 1.5 g
mass of calcium = 0.051 g
Therefore, if calcium makes up 3.4% by mass of Earth's crust, the grams of calcium present if a sample of earths crust has a mass of 1.5 g is 0.051 g.
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