Question

Solid magnesium metal reacts with chlorine gas according to the following equation:

Mg + Cl2 --> MgCl2

What mass of magnesium chloride is formed in the reaction between 7 g of Mg and 13.2 g of Cl2




I got 7/24.3= .288
13.2/70.90= 1.861777

thats as far as i got and im stuck and don't know what to do next

Answer 1

YOu got moles of Mg, and moles of Cl2. The reaction then will be limited by the moles of Mg.

So you will get .288moles of MgCl2

massMgCl2=.288*molmassMgCl2

Answer 2

The equation is limited by the element you have the least moles of.

In this case it will be the Cl2. 13.2/70.9 = .1862 mol

massMgCl2 = .1862 mol * molmassMgCl2