Question

How many molecules of HCI would react with 2 moles of Al?
2AI + 6HCI-2AICI 3
+ 3H₂

Answer 1

From the coefficients of the equation, we know that for every 2 moles of Al consumed, 6 moles of HCl are consumed.

This means 6(2/2)=6 moles of HCl are needed.

Since there are
`6.022 * 10^(23)` molecules in 1 mole of a substance, there are :

`6(6.022 * 10^(23)}=\boxed{4 * 10^(24) \text{ (to 1 sf)}}`