Grade 10 Chemistry: Mole Relationships
A worksheet for Grade 10 Chemistry students covering mole relationships, including Avogadro's number, molar mass, and mole-to-mass conversions.
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Grade 10 Chemistry: Mole Relationships
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Read each question carefully and answer to the best of your ability. Show all your work for calculation problems.
1. What is the value of Avogadro's number?
6.022 x 10^22 particles/mol
6.022 x 10^23 particles/mol
1.000 x 10^23 particles/mol
6.000 x 10^23 particles/mol
2. Which of the following represents the molar mass of H2O?
1 g/mol
16 g/mol
18 g/mol
32 g/mol
3. The mole is a unit of measurement used in chemistry to express amounts of a chemical .
4. The molar mass of an element is numerically equal to its mass expressed in grams per mole.
5. Calculate the number of moles in 54.0 grams of water (H2O). Show your work.
6. How many atoms are present in 2.5 moles of Oxygen gas (O2)? Show your work.
7. One mole of any substance contains the same number of particles.
True
False
8. The molar mass of a compound is the sum of the atomic masses of all atoms in its chemical formula.
True
False
Match each term on the left with its definition on the right.
9. Mole
a. The mass of one mole of a substance
10. Molar Mass
b. 6.022 x 10^23 particles
11. Avogadro's Number
c. The SI unit for amount of substance
12. The illustration above shows a water molecule. What is the approximate molar mass of this molecule?
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