Question

This is the chemical formula for talc (the main ingredient in talcum powder): Mg3(SiOs), (OH)2 An analytical chemist has determined by measurements that there are 22. moles of oxygen in a sample of talc. How many moles of hydrogen are in the sample? Round your answer to 2 significant digits. 1 mol x 6 ?

Answer 1

Answer:

3.67 moles of hydrogen are in the sample.

Explanation:

The chemical formula for talc =$Mg_3(Si_2O_5)_2.(OH)_2$

In 1 mole of talc there are 12 moles of oxygen.

Then 22 moles of oxygen will be in:

$\frac{1}{12}\times 22=1.8333 mol$ of talc

In 1 mole of talc there are 2 moles of hydrogen.

Moles of hydrogen in 1.8333 moles of talc.

$=1.8333\times 2 mol=3.6666 mol\approx 3.67 mol$ of hydrogen

3.67 moles of hydrogen are in the sample.