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August 30, 2015

Homework Help: chemistry

Posted by cal on Tuesday, February 12, 2008 at 10:12am.

What is the sum of the coefficients (including 1) of the balanced equation?
__CaCO3 + __NaF __ CaF2 + __Na2CO3

4
5
6
7
8


If you start with 20.0 grams CaCO3, how many moles of CaCO3 do you have?

20.0
2.00
.200
.0200
.0386


If you start with .500 moles of NaF, how many moles of CaF2 will form
.500
1.00
1.50
2.00
0.250


What is the sum of the coefficients (including 1) of the following reaction?
Sodium sulfate + calcium hydroxide ???

4
5
6
7
9


Predict the precipitate that forms: HCl + AgNO 3 ???
HNO3
HCl
AgNO3
AgCl
no precipitate forms

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