Thursday

January 29, 2015

January 29, 2015

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

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 - ?

- Chemistry -
**DrBob222**, Tuesday, March 18, 2014 at 11:53pm2.) 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)

mols Br2 = grams/molar mass = estimated 0.1 but you should be more accurate than that.

Use the coefficients in the balanced equation to convert mols Br2 to mols KBr. That will be about 0.1 x (2 mol KBr/1 mol Br2) = estimated 0.2

Then convert mols KBr to g. g = mols x molar mass = about 0.2 x 119 = about 24.

ALL of these are worked the same way. The way I worked #2 will work all of them. I don't understand how you could do 1 and not do the others.

**Answer this Question**

**Related Questions**

Chemistry - For the lab we just did in class, one of the questions wants to know...

Chemistry - Hello. On the homework for my middle school chemistry class, one of...

Pre Calculus - So I only have 3 homework questions left and I can't seem to ...

Chemistry - Unfortunately I was hit by the sweep of illnesses going around due ...

CHEMISTRY URGENT - Does anyone have a "Chemistry in Context 6th edition" by ...

calculus-derivatives - Hello, please help me, I'm studying for a test. :) I won'...

math - Subjects Art Business Computers English Foreign Languages Health Home ...

science - ________________, the way that most plants and animals reproduce ...

Math - i have this question on tesselations, I got some homework and one of the ...

Mathematics - I have this question on tesselations, I got some homework and one ...