WorksheetsGravimetric Stoichiometry Quiz
Total questions: 20
Worksheet time: 3hrs 20mins
2 KClO3 → 2KCl + 3 O2
How many moles of oxygen are produced when 6.70 moles of KClO3 decompose completely?
6.70 mol
20.1 mol
10.1 mol
4.47 mol
2Al + 3H2SO4 -> Al2(SO4)3 + 3H2
How many grams of aluminum sulfate would be formed if 250 g of H2SO4 completely reacted with aluminum?
2.62 x 103 g
291 g
450 g
872 g
2Na + 2H2O → 2NaOH+ H2
How many grams of hydrogen are produced if 120 g of Na are available?
2.6 g
5.2 g
21 g
5.3 g
What is the mole ratio in the following reaction:
2CO + O2 → 2CO2
2:1:2
1:1:1
1:2:1
Have no clue what a mole ratios is!!
In a chemical reaction, the mass of reactants ___.
is less than the mass of products
is greater than the mass of products
has no relationship to the mass of products
is equal to the mass of products
N2 + 3H2 → 2NH3
How many moles of hydrogen are needed to react with 2 moles of nitrogen?
6
2
3
1
2H2 + O2 → 2H2O
How many moles of water can be produced if 8 moles H2 are used?
4 moles
8 moles
16 moles
2 moles
2 NaClO3 (s) --> 2NaCl (s) +3 O2 (g)
12.0 moles of NaClO3 will produce how many grams of O2?
1.73 x 103 g of O2
576 g of O2
256 g of O2
384 g of O2
For the Balanced Reaction: 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe;
What is the Ratio of moles of MgO to moles Fe?
3mol Mg / 2 mol Fe
2 mol Mg/ 3 mol Fe
1 mol Fe/ 2 mol Fe
3 mol MgO / 2 mol Fe
The process of comparing units is called ____________________.
stoichiometry
dimensional analysis or unit Analysis
algebra
social studies
2 C2H6 + 7 O2 → 4 CO2 + 6 H2O
Ethane (C2H6) combusts in the above reaction. What is the mole ratio of carbon dioxide to water?
How many step will it take for me to go from moles given to moles unknown?
1
2
3
4
How many steps will it take me to go from grams to grams?
4
3
2
1
How many step will it take for me to go from grams to moles unknown
1
2
3
4
I use mole ratio (coefficients) from balanced chemical equation?
True
False
B2H6 + 3O2 -->2 HBO2 + 2 H2O
What mass of O2 will be needed to burn 36.1 g of B2H6?
13.9 g
41.7 g
125 g
3.91 g
4 Al + 3 O2 –> 2 Al2O3
How many moles of aluminum would be needed to completely react with 45 grams of O2?
0.63 moles
1.1 moles
1.8 moles
1.9 moles
