Chemistry Question?? Please help
Favorites|Homepage
Subscriptions | sitemap
HOME > > Chemistry Question?? Please help

Chemistry Question?? Please help

[From: ] [author: ] [Date: 12-03-31] [Hit: ]
By evaporating the H2O I found the mass of H2O but now I need to find b? What calculations do I do to find this?Here w is known, Z is also, so the value of b can be calculated. the rounded integer will be the value of b.......
If I was given a compound CuCl2 bH2O, I need to find b. By evaporating the H2O I found the mass of H2O but now I need to find b? What calculations do I do to find this?

-
In CuCl2 bH2O b is the number of moles of H2O
Let initial mass of the salt is Z g
mass of water = w g
From CuCl2 bH2O
18b g water is associated with 134 g of CuCl2
Therefore w g water will be associated with 134xw/18b g
And 134xw/18b = (Z - w) g of CuCl2
Thus b = 134xw/18(Z - w)
Here w is known, Z is also, so the value of b can be calculated. the rounded integer will be the value of b.
1
keywords: help,Question,Please,Chemistry,Chemistry Question?? Please help
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .