A8 Mole Concept

Multiple Choice

The relative formula mass of a chloride, XCl, is 58.5. What is the relative atomic mass of X?

• 11

• 17

• 23

• 35.5

​The relative formula mass of a chloride, XCl, is 58.5. What is the relative atomic mass of X?

Multiple Choice

Which of the following shows the correct steps for calculating the relative formula mass of CuSO₄.5H₂O?

• 64 + 32 + 16 + 1 + 16

• 64 + (1 × 32) +

  (4 × 16) + 5(2 + 16) 

• 64 + (1 × 32) +

  (4 × 16) × 5(2 + 16)

• 4(64 + 32 + 16) + 5(2 + 16)

​

Which of the following shows the correct steps for calculating the relative formula mass of CuSO₄.5H₂O?

​Drawing parallels with the concepts

​Drawing parallels with the concepts

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​Drawing parallels with the concepts

Open Ended

Can you form an equation using the following terms?

Molar mass, Avogrado's constant, average mass of one particle

Open Ended

Share one thing that you've written in your Top 10 List

Multiple Choice

The mass of one mole of oxygen atoms is 16 g.

What is the mass of one mole of oxygen gas?

• 8 g

• 16 g

• 24 g

• 32 g

Multiple Choice

What is the number of moles of hydrogen atoms in

1.7 g of ammonia gas (NH₃)?

• 0.1

• 0.3

• 1.4

• 1.7

Multiple Choice

10 g of magnesium oxide contains ...

• 0.25 mol of magnesium oxide

• 0.5 mol of magnesium oxide

• the same number of moles as 10 g of zinc oxide

• 5 g of magnesium atoms and 5 g of oxygen atoms