Winter Molympics 2014
Team Members: _______________________________________________________________________
Qualifying Events:
Part 1: Determine the molar mass for each of the compounds/molecules. Record your
completion time for all 5 problems.
Time: _______________________
Compound Name
Iron (III) hydroxide
Formula
Molar Mass (g)
Potassium nitrate
Bromine gas
Argon Gas
Calcium phosphate
Part 2: Mole-Grams Calculations. Record your completion time for all 5 problems.
Time: _______________________
Problem
Work
If 1.4 moles of Iron (III) hydroxide
are needed for an experiment,
how many grams is this?
How many moles of Potassium
nitrate are represented by 453.2
g of the substance?
If 34.6 moles of Bromine gas
necessary for a reaction, how
many grams of the gas are
needed?
0.056 grams of Argon Gas are
released from a broken light
bulb, how many moles of gas
were released?
189.900 moles of Calcium
phosphate are needed in a
reaction, how many grams is
this?
Answer:
Part 3: Mole-Particles Calculations. Record your completion time for all 5 problems.
Time: _______________________
Problem
Work
If 1.4 moles of Iron (III) hydroxide
are needed for an experiment,
how many formula units is this?
How many moles of Potassium
nitrate are represented by
4.532x1021 formula units of the
substance?
If 34.6 moles of Bromine gas
necessary for a reaction, how
many molecules of the gas are
needed?
0.056 moles of Argon Gas are
released from a broken light
bulb, how many atoms were
released?
1.89 x 10-3 moles of Calcium
phosphate are needed in a
reaction, how many formula
units is this?
Answer:
Part 4: Mole-Liter Calculations. Record your completion time for all 5 problems.
Time: _______________________
Problem
If 1.4 moles of water vapor (at STP)
are needed for an experiment, how
many liters is this?
How many moles of O2 are
represented by 567.3 L of the
substance at STP?
If 34.6 moles of Bromine gas
necessary for a reaction, how many
liters of the gas are needed? (At
STP)
0.056 moles of Argon Gas are
released from a broken light bulb,
how many liters were released? (at
STP)
1.89 x 10-3 moles of hydrogen gas
are needed in a reaction, how
many liters is this? (at STP)
Work
Answer:
Part 5: Mixed Calculations. Record your completion time for all 5 problems.
Time: _______________________
Problem
If 1.4 g of Iron (III) hydroxide are
needed for an experiment, how
many formula units is this?
How many grams of Potassium
nitrate are represented by
4.532x1021 formula units of the
substance?
If 34.6 grams of Bromine gas
necessary for a reaction, how
many liters of the gas are
needed? (at STP)
0.056 liters of Argon Gas are
released from a broken light
bulb, how many atoms were
released? (At STP)
1.89 x 1046 formula units of
Calcium phosphate are needed
in a reaction, how grams are
needed?
Torch lighting ceremony:
Work
Answer:
5.00 grams of ethanol will be used to light the Molympic torch. How many molecules of
ethanol is this?