Question

Calculate the following Ca+2H2O——>Ca(OH)2+H2What are the total number of atoms of H2 formed if 5 moles of H2 are produced?

Answer 1

So, given the reaction:

We want to find the number of atoms of H2 formed if 5 moles of H2 are produced.

Remember that 1 mol of any compound is defined as the Avogadro's number:

So, we could write:

`5\text{molesH}2\cdot\frac{6.022\cdot10^(23)atomsH2}{1\text{ mol H2}}=3.011\cdot10^(24)atomsH2`

Therefore, that's the answer.