Unit #1Unit #2Unit #3Unit #4Unit #5Unit #6Unit #7Unit #8Unit #9Unit #10
spacerUNIT # 7  
spacerspacerIntroduction
spacerspacerObjectives
spacerspacerReading

spacer7.1 Calculation of
spacerFormula
spacerMass

spacer7.2 Mole
spacerConcept

spacer7.3 Atomic Mass
spacerRevisited

spacer7.4 Calculation of
spacerMolar Mass
spacer
7.5 Calculations
spacerinvolving
spacerAvogadro #

spacerMass to mole conversion and vice-versa
spacermole to number of particles conversion and vice-versa
spacerMass in grams to number of particles conversion
spacer
7.6 Molar Volume
spacerof a Gas
spacerMolar volume calculations
spacer
7.7 Percent
spacerComposition
spacer
7.8 Empirical
spacerFormula

spacer7.9 Empirical
spacerMass to
spacerMolecular
spacerFormula



spacerProblems
spacer1 | 2
| 3 | 4 | 5

Unit # 7 - Calculations Based on Formulas
Gram/Mole Calculation

1.(a) Determine the mass of one mole of CO2
(b)
Determine the number of atoms in one molecule of CO2
(c)
Determine the number of atoms in one mole of CO2
(d)
Determine the mass of 5.240 moles of CO2
(e)
Determine the number of moles of CO2 in 85.4 g of CO2.

2(a)
Determine the number of calcium ions, Ca2+, in one formula unit of Ca(OH)2.
(b)
Determine the number of hydroxide ions, OH-, in one formula unit of Ca(OH)2.
(c)
Determine the number of calcium ions, Ca2+, in 7.25 moles of Ca(OH)2.
(d)
Determine the number of hydroxide ions, OH-, in 7.25 moles of Ca(OH)2.

3. Convert each of the following quantities to moles.
(a)
12.5 g of Fe.
(b)
12.5 g of Fe2O3.
(c)
142.9 g of glucose, C6H12O6.
(d)
82 g of gold.

(a) 0.800 mole of NaCl.
(b) 1.50 mole CO2.
(c) 7.25 mole Silicon.
(d) 5.663 mole of nitrogen gas.

5 (a) Determine the mass, in grams, of one atom of silver.
(b)
Determine the mass, in grams, of one molecule of carbon dioxide.
(c)
The mass of a milliliter of water weighs 1.000 g.
How many water molecules are present?
(d)
How many chloride ions are present in 3.52 g of MgCl2?

Click here for more questions on converting between moles to grams.

Click here for more questions on converting between grams to moles.

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