Question
Asked Oct 22, 2019
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A certain fertilizer is advertised to contain 10.5% K2O. What percentage of the fertilizer
is potassium?

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Expert Answer

Step 1

The molar mass of any substance is the mass of 1 mole of that substance. The unit of molar mass is gram/ mole.

Step 2

1 mole of any substance contains 6.022 x 1023 atoms or molecules or particles. Here 6.022 x 1023 is known as Avogadro number.

Step 3

Calculate the moles of K2O:

Mass of K2O = 10.2 g in 100 g fertilizer

Molar mass...

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