Question

Determine the number of moles of Sn(l) produced when 4.0 moles of H2(g) is completely consumed.

Answer 1

2 moles of Sn are produced.

From the balanced equation, we can see that 2 moles of hydrogen gas (H2) produce 2 moles of water (H2O) and 1 mole of tin (Sn).

So, with a mathematical Rule of Three we can calculate the number of moles of Sn produced when 4.0 moles of H2 are completely consumed:

$\begin{gathered} 2molesH_2-1\text{molSn} \\ 4\text{moles}H_2-x=\frac{4\text{moles}\cdot1\text{mol}}{2moles_{}} \\ x=2\text{moles} \end{gathered}$

Finally, we found that 2 moles of Sn are produced.