Answer:
20 moles HCl
Explanation:
To find the final answer, you need to use the mole-to-mole ratio (from the equation) to convert from moles H₂ to moles HCl. Make sure to arrange the ratios in a way that allows for the units of H₂ to cancel out.
1 H₂ (g) + Cl₂ (g) --> 2 HCl (g)
10 moles H₂ 2 moles HCl
------------------- x --------------------- = 20 moles HCl
1 mole H₂
