chem, homework help?

Question

1. Given the following equation: 2 C4H10 + 13 O2--> 8 CO2 + 10 H20, show what the following molar ratios would be.
a. C4H10/02
B.O2/H2O
C. O2/H2O
D. C4H10/CO2
E. C4H10/H20

2. Given the following equation: 2 KClO3 ---> 2 KCl + O2
How many moles of O2 can be produced by letting 12.00 moles of KClO3 react?

3. Given the following equation: 2 K + Cl --> 2 KCl
How many grams of KCl is produced from 2.50 g of K and excess Cl2. From 1.00g of Cl2and excess K.

4. Given the following equation: Na20 + H2O--> 2 NaOH
How many grams of NaOH is produced from 1.20 x 10(exponant)2 grams of Na2O? How many grams of NA2O are required to produce 1.60 x 10(exponant)2 grams of NaOH.

5. Given the following equation: 8 Fe + S8---> 8Fes
What mass of iron is needed to react with 16.0 grams of sulfur? How many grams of FeS are produced?

Answer 1

huh.....