Hi everyone, I have this problem that I'm somewhat confused about. The problem is:
"An alloy of aluminum and magensium was treated with sodium hydroxide solution, in which only aluminum reacts to give hydrogen gas:
2Al + 2NaOH + 6H20 --> 2NaAl(OH)4 + 3H2
If a sample of alloy weighing 1.118 g gave 0.1068 g of hydrogen, what is the percentage aluminum in the alloy?"
How do I account for the magnesium and what stoichiometric relationships would I need to set-up? This is very confusing, but I appreciate the slightest of help on this!