Chemistry Help! Mass to Mass Conversion!
Favorites|Homepage
Subscriptions | sitemap
HOME > > Chemistry Help! Mass to Mass Conversion!

Chemistry Help! Mass to Mass Conversion!

[From: ] [author: ] [Date: 12-05-13] [Hit: ]
39 grams) = ..229 mol zn x 1 mol H2/1 mol zn x 2.02 grams/ 1 mole H2 = .......
Zn + 2HCl -> H2 + ZnCl2

molar mass of Zn is 65.39 g/mole
molar mass of H2 is 2.02 g/mole

How many grams of hydrogen are produced when 15 grams of Zn are used?

The answer I keep getting is .46 grams of H2
I do not know if that is right

-
You are correct, because you would set the problem up like this..

15 G zn /1 x 1 mol zn /65.39g zn x 2.02 g H2/1mol zn



The Grams of zn would cancel as well as the moles of zn. You would multiple the top and divide by the bottom, getting you .46 g of H2.

PLEASE answer my question!

http://answers.yahoo.com/question/index;_ylt=Ahscbw1bnL.UsZm2PODG4NHty6IX;_ylv=3?qid=20120512160500AAg6mQR

-
15 grams zinc x (1 mol zinc)/(65.39 grams) = .229 mols of zinc

.229 mol zn x 1 mol H2/1 mol zn x 2.02 grams/ 1 mole H2 = .463

You are correct
1
keywords: Conversion,to,Mass,Help,Chemistry,Chemistry Help! Mass to Mass Conversion!
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .