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WorksheetsStoichiometry 2020
Total questions: 18
Worksheet time: 5hrs 30mins
Stoichiometry is ____________ (choose all correct answers)
A way to convert quantities of reactants & products within a
chemical reaction.
The best way to determine amount of substances
involved in chemical reactions if at least 1 quantity
from the reaction is known.
The best way to determine the type of chemical reaction that has occurred.
A way for conversions from a reactant or product to
another reactant or product in the equation.
There are numerous units that can be used with stoichiometry conversions. Which units does this presentation cover (choose all correct units).
gallons
grams
joules
moles
How many steps will a moles of A to moles of B calculation require?
1
2
3
4
How many steps will a moles of A to grams of B calculation require?
1
2
3
4
How many steps will a grams of A to grams of B calculation require?
1
2
3
4
Which model best represents the "Mole Bridge" stoichiometry model?
For the conversion from moles of A to grams of A, the moles of A always equals 1. Where does the grams of A in this conversion come from?
grams given within the problem
gram atomic mass of the substance A
determined by multiplying gram atomic mass by substance A's coefficient.
grams given by the problem multiplied by substance A's coefficient.
For the conversion from moles of A to moles of B, how does the numbers assigned to each mole value get assigned?
based on grams given within the problem
based on gram atomic mass of the substance A
based on coefficients from the chemical equation
1 mole per gram atomic mass
If 2 mol of HCl react, how many moles of H2 are obtained?
(a) moles H2
How many moles of Mg will react with 2 mol of HCl?
(a) moles of Mg
If 4 mol of HCl react, how many mol of hydrogen gas are produced?
(a) moles of H2
PROBLEM: If 6 moles carbon dioxide are produced, how
many moles of water are produced? (a) moles of water
PROBLEM: If 4 moles of ethane undergoes
combustion, how much oxygen is required in
moles?
(a)
PROBLEM: How many grams of water are produced
by adding enough oxygen to react 1 moles
of ethane?
9 grams of water
18 grams of water
36 grams of water
72 grams of water
How many moles of hydrogen gas are needed to
produce 36 grams of water?
0.50
1.0
2.0
18
How many moles of oxygen gas are needed to
4.0 grams of hydrogen gas?
0.50
1.0
2.0
18
How many grams of oxygen gas are needed to
react 2.0 grams of hydrogen gas?
4.0
8.0
16
32
How many grams of water will be produced from 32 grams of oxygen and 4.0 grams of hydrogen?
4.5
9.0
18
36
