Question

If 0.5 moles of hydrogen gas are produced how many molecules of hydrogen gas was made

Answer 1

We can use the relation between moles and number of molecules to find out how many hydrogen gas molecules (H2) were produced:

$1\text{ mole = 6}\times10^{23}\text{ molecules}$

In this case, 0.5 moles of H2 were produced, so we can set the following proportion:

$\begin{gathered} 1\text{ mole-----6}\times10^{23}\text{ molecules} \\ 0.5\text{ moles----x molecules} \\ \\ x=\frac{6\times10^{23}\times0.5}{1}=3\times10^{23}\text{ molecules } \end{gathered}$

So, we have produced 3x10^23 molecules of hydrogen gas.

$\begin{gathered} \frac{600}{2}=300 \\ \frac{6\times10^2}{2}=3\times10^2=300 \end{gathered}$