**This is part of a moles to moles worksheet I need help with.**

Can someone help me with this problem, I don't know how to write down the "three moles of zinc and an excess of hydrochloric acid" part into a conversion equation.

iiVoidRavenZ
Apr 21, 2017

#1**+3 **

The reaction states that for every atom of zinc, there are 2 atoms of hydrochloric acid

since the units are the same, we can simply change "atoms" to "moles"

So: 1 mole Zn + 2 moles HCl works in the equation

Since we have 3 moles of zinc, we can just multiply each part of the chemical reaction by 3 (chemical reactions are kind of like equations).

2 mol Zn + 6 mol HCl --> 3 mol ZnCl_{2} + 3 mol H_{2}

H_{2} is hydrogen gas

therefore: 3 mol of hydrogen gas are created

helperid1839321
Apr 21, 2017

#3