Friday
July 25, 2014

Homework Help: Chemistry

Posted by J.J on Tuesday, March 18, 2014 at 10:55pm.

Hello! I'm doing these questions for my chemistry homework, and I can only figure out the first one, I don't know how to do the rest, I'm completely stuck! Please help!! Thank you!

1.) For the reaction, calculate how many grams of the product form when 18.4g of Ca completely reacts.
Assume that there is more than enough of the other reactant.
Ca(s)+Cl2(g)→CaCl2(s)

answer - 50.9 g.

2.) For the reaction, calculate how many grams of the product form when 18.4g of Br2 completely reacts.
Assume that there is more than enough of the other reactant.
2K(s)+Br2(l)→2KBr(s)

answer - ?

3.) For the reaction, calculate how many grams of the product form when 18.4g of O2 completely reacts.
Assume that there is more than enough of the other reactant.
4Cr(s)+3O2(g)→2Cr2O3(s)

answer - ?

4.) For the reaction, calculate how many grams of the product form when 18.4g of Sr completely reacts.
Assume that there is more than enough of the other reactant.
2Sr(s)+O2(g)→2SrO(s)

answer - ?

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