Stoichiometry Basics Question Preview (ID: 8778)


Use The Balanced Chemical Equations And The Mole Relationships You've Learned In Class To Answer The Questions. TEACHERS: click here for quick copy question ID numbers.

To produce 12 moles of water, how many moles of oxygen gas are needed? 2C2H6 + 7O2 yields 4CO2 + 6H2O
a) 2 moles
b) 14 moles
c) 9 moles
d) 7 moles

How many liters of oxygen are required to produce 2 liters of water at STP? 2H2 + O2 yields 2H2O
a) 1 L
b) 4 L
c) 3 L
d) 2 L

If 5.9 moles of carbon react, how many moles of CS2 are produced? 5C + 2SO2 yields CS2 + 4CO
a) 0.077 moles
b) 30 moles
c) 1.5 moles
d) 1.2 moles

In the following reaction, how many moles of carbon monoxide are needed to react completely with 7.0 moles of oxygen gas? 2CO + O2 yields 2CO2
a) 7.0 moles
b) 4.0 moles
c) 14 moles
d) 3.5 moles

How many moles of carbon dioxide, can be formed by the decomposition of 5 moles of aluminum carbonate? Al2(CO3)3 yields Al2O3 + 3CO2
a) 20 moles
b) 10 moles
c) 5 moles
d) 2 moles

How many grams of H2SO4 are needed to produce exactly 11.2 liters of H2, measured at STP? Mg + H2SO4 yields MgSO4 + H2
a) 24.5g
b) 196g
c) 49.0g
d) 98.0g

How many liters of ammonia are produced when 28.0 grams of nitrogen are completely consumed? N2 + 3H2 yields 2NH3
a) 5.60L
b) 44.8L
c) 22.4L
d) 11.2L

If 3.50 g of H2S are used, how many grams of water are produced? 2H2S + 3O2 yields 2H2O + 2SO2
a) 0.102g
b) 185g
c) 1.85g
d) 0.185g

If 0.600g of Zn is used, how many grams of ZnCl2 is produced? Zn + 2HCl yields ZnCl2 + H2
a) 0.125g
b) 0.18g
c) 12.5g
d) 1.25g

How many molecules of sulfuric acid are produced from 284.1g of sodium sulfate? 2HCl + Na2SO4 yields 2NaCl + H2SO4
a) 6.020 x 10 23 molecules
b) 6.020 x 10 24 molecules
c) 2.408 x 10 24 molecules
d) 1.204 x 10 24 molecules

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