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Mole mass Conversion

Last updated over 1 year ago

8 questions

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Question 1

1.

How many moles are in 130 grams of Al (Aluminum: Atomic mass = 26.98)?

5.61 moles

4.82 moles

3.92 moles

6.49 moles

Question 2

2.

How many grams are there in 3 moles of Fe (Iron: Atomic mass = 55.93)?

167.79 grams

156.93 grams

163.36 grams

159.45 grams

Question 3

3.

How many molecules are in 0.5 moles of CO2? (Avogadro's number = 6.02 x 10^23)

1.51 x 10^23 molecules

3.01 x 10^23 molecules

6.02 x 10^23 molecules

3.04 x 10^24 molecules

Question 4

4.

How many grams of H2O (Water: Molecular mass = 18) are there in 4.50 moles?

90 grams

72 grams

81 grams

96 grams

Question 5

5.

How many moles are in 56g of Iron (Fe)? (molar mass of Iron is about 56 g/mol)

0.5 mol

1 mol

56 mol

2 mol

Question 6

6.

The molar mass of H2O is approximately 18g. How many grams are in 5 moles of H2O?

36g

90g

23g

64g

Question 7

7.

Calculate the number of molecules in 1 mole of carbon dioxide (CO2)

6.022 x 10^23 molecules

3.012 x 10^24 molecules

6.022 x 10^20 molecules

1.204 x 10^24 molecules

Question 8

8.

If 60 g of Calcium (Ca) is available, how many moles of Calcium do we have? (Molar mass of Ca is about 40 g/mol)

1 mol

3 mol

1.5 mol

2 mol