Posted by Rara on Tuesday, October 4, 2011 at 8:09pm.
First, you need to balance the equation. Can you do that?
You will need two moles of HCl per mole of zinc.
Ask yourself this question:
How many moles of zinc is 8 grams?
I balanced it and got:
2HCL + Zn ---> ZnCl2 + H2
And then to find moles I did: 8/65.37 and got 0.1124 moles.
But now I'm stuck, what do I do next?
You are doing fine so far.
You need 2*0.1124 = 0.2248 moles of HCl.
One liter of the solution contains 0.3 moles of HCl.
You need a bit less than a liter of the acid solution.
Okay, so would I divide 0.3 by 0.2248? >_> I'm sorry, my chemistry is my weakest subject. :(
No, you need less than a liter.
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