The balanced equation is
Mg+2HCl->H2+MgCl2 but I can't recall how to find the moles. Sorry, hope I helped a little!
How many moles of H2 will be produced if 0.500g of Mg is reacted with 10.00mL of 2.0M HCl? Also, provide a balanced equation.
2 answers
This is a limiting reagent problem. I solve these by working TWO stoichiometry problems.
First, use moles Mg to solve for moles H2 formed. moles Mg = grams/molar mass.
Next, use moles HCl (moles = M x L) to solve for moles H2 formed. Both answers can't be right; the correct answer in limiting reagent problems is ALWAYS the smaller value and the reagent producing that number is the limiting reagent. Here is an example of how to solve a stoichiometry problem.
http://www.jiskha.com/science/chemistry/stoichiometry.html
First, use moles Mg to solve for moles H2 formed. moles Mg = grams/molar mass.
Next, use moles HCl (moles = M x L) to solve for moles H2 formed. Both answers can't be right; the correct answer in limiting reagent problems is ALWAYS the smaller value and the reagent producing that number is the limiting reagent. Here is an example of how to solve a stoichiometry problem.
http://www.jiskha.com/science/chemistry/stoichiometry.html
4 answers