Mole Relationships Worksheet
A Grade 11 Chemistry worksheet covering mole relationships, Avogadro's number, molar mass, and conversions between mass, moles, and particles.
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Standards
Topics
Mole Relationships in Chemistry
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Read each question carefully and answer to the best of your ability. Show all work for calculations.
1. What is the approximate value of Avogadro's number?
6.02 x 10^22
6.02 x 10^23
1.00 x 10^23
6.02 x 10^-23
2. The molar mass of a compound is defined as:
The mass of one atom of the compound
The mass of 6.02 x 10^23 molecules of the compound
The sum of the atomic masses of all atoms in the compound
Both b and c
3. One mole of any substance contains particles.
4. To convert grams to moles, you must divide by the .
5. The unit for molar mass is .
6. Calculate the molar mass of water (H₂O). (Atomic mass of H = 1.01 g/mol, O = 16.00 g/mol)
7. How many moles are in 25.0 grams of sodium chloride (NaCl)? (Atomic mass of Na = 22.99 g/mol, Cl = 35.45 g/mol)
8. A mole of feathers has the same number of particles as a mole of lead.
True
False
9. The molar mass of an element is numerically equal to its atomic mass.
True
False
10. A sample of carbon dioxide (CO₂) has a mass of 44.0 grams. How many molecules of CO₂ are in this sample? (Atomic mass of C = 12.01 g/mol, O = 16.00 g/mol)
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