4FeCr2O7 + 8K2CO3 + O2 2Fe2O3 + 8K2CrO4 + CO2



Stoichiometry worksheet

4FeCr2O7 + 8K2CO3 + O2( 2Fe2O3 + 8K2CrO4 + CO2

1. How many grams of FeCr2O7 are required to produce 44.0g of CO2?

2. If 300.0g of FeCr2O7 react, how many grams of O2 will be consumed?

3. How many grams of Fe2O3 will be produced from 300.0g of FeCr2O7?

6NaOH + 2Al ( 2Na3AlO3 + H2

4. How many moles of Al is required to produce 17.5g of H2?

5. How many gram of Na3AlO3 can be formed from 165.0 g of NaOH?

6. How many moles of NaOH are required to produce 3.0 g H2.

7. How many mole of hydrogen can be prepared from 1.0 mole of Al metal.

B2O3 + 3Mg ( 3MgO + 2B

8. How many grams of B (that is boron!) can be obtained from 10.00 grams of B2O3

9. How many grams of Mg metal is required to produce 400.0 moles of B

10. Balance the following:

a.KMnO4 + H2SO4 ( K2SO4 + Mn2O7 + H2O

b.HBrO3 + Ba(OH)2 ( Ba(BrO3)2 + H2O

c. Na + S8 ( Na2S

Answers:

1.1.08 x103 g FeCr2O7

2. 8.828g O2

3. 88.12g Fe2O3

4. 17.5mol Al

5. 197.9g Na3AlO3

6. 9.0 mol NaOH

7. 0.50mol H2

8. 3.105g. B

9. 14,580 g Mg

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