posted by Stacie on .
For the reaction:
Mg + 2 HCl => MgCl2 + H2
a) How many grams of HCl are required to react with 62.0 g of Mg?
All of these stoichiometry problems are about alike.
1. Write and balance the equation.
2. Convert grams Mg to moles. moles = grams/molar mass.
3. Using the coefficients in the balanced equation, convert moles Mg to moles HCl.
4. Now convert moles HCl to grams HCL. g = moles x molar mass.