The mole

Level 2

100

How many aoms are in 2.750 moles of gold?

1.66 x 10²⁴

200

How many moles are in 4.8 x 10²¹ molecules of CO₂?

0.0080 moles

300

How many moles are in 57.3 grams of Ca(OH)₂?

0.774 mol

400

How many grams are in 1.9 moles of Na₂S?

150 grams

500

How many formula units are in 7.43 grams of NiCl₂?

3.47 x 10²² formula units

Level 3 Reaction A

100

3O₂ + 4Fe ----> 2Fe₂O₃

How many moles of iron (III) oxide are produced from 0.87 mol of iron?

0.44 mol Fe2O3

0.87 times 2 divided by 4

200

3O₂ + 4Fe ----> 2Fe₂O₃

How many grams of Iron(III)oxide are produced from 2.3 mol of O₂?

245 grams Fe2O3

2.3 times 2 divided by 3 times 160

300

3O₂ + 4Fe ----> 2Fe₂O₃

How many grams of iron (III) oxide are produced from 4.6 mol of iron?

368 grams Fe2O3

4.6 times 2 divided by 4 times 160

400

3O₂ + 4Fe ----> 2Fe₂O₃

How many grams of iron(III)oxide are produced from 5.7 grams of O2?

19 g Fe2O3

5.7 divided by 32 times 2 divided by 3 times 160

500

3O₂ + 4Fe ----> 2Fe₂O₃

How many grams of iron(iii)oxide are produced from 3.6 grams of iron?

5.14 grams Fe2O3

3.6 divided by 56 times 2 divided by 4 times 160

Level 3 Reaction B

100

4NH₃ + 3O₂ ----> 2N₂ +6H₂O

How many moles of O2 are produced from 0.76 mol of N2?

1.14 mol O2

0.76 times 3 divided by 2

200

4NH₃ + 3O₂ ----> 2N₂ +6H₂O

How many grams of water are produced from 2.32 mol NH3?

62.6 grams H2O

2.32 times 6 divided by 4 times 18

300

4NH₃ + 3O₂ ----> 2N₂ +6H₂O

How many grams of N2 are produced from 0.68 mol of NH3?

9.52 grams N2

0.68 times 2 divided by 4 times 28

400

4NH₃ + 3O₂ ----> 2N₂ +6H₂O

How many grams of N2 are produced from 3.9 g of NH3?

3.2 grams N2

3.9 divided by 17 times 2 divided by 4 times 28

500

4NH₃ + 3O₂ ----> 2N₂ +6H₂O

How many grams of H2O are produced from 6.5g of O2?

7.3 grams H2O

6.5 divided by 32 times 6 divided by 3 times 18

Level 3 Reaction C

100

4AlF₃ + 3O₂ ----> 2Al₂O₃ + 6F₂

How many moles of Aluminum fluoride are needed to react with 0.35 mol of aluminum oxide?

0.7 mol AlF3

0.35 times 4 divided by 2

200

4AlF₃ + 3O₂ ----> 2Al₂O₃ + 6F₂

How many grams of aluminum oxide are produced from 1.75 mol of aluminum fluoride?

89.25 grams Al2O3

1.75 times 2 divided by 4 times 102

300

4AlF₃ + 3O₂ ----> 2Al₂O₃ + 6F₂

How many grams of aluminum oxide are produced from 0.36 mol of O2?

24.48 grams Al2O3

0.36 times 2 divided by 3 times 102

400

4AlF₃ + 3O₂ ----> 2Al₂O₃ + 6F₂

How many grams of aluminum oxide are produced from 2.8 grams of aluminum fluoride?

1.7 grams Al2O3

2.8 divided by 84 times 2 divided by 4 times 102

500

4AlF₃ + 3O₂ ----> 2Al₂O₃ + 6F₂

How many grams of F2 are produced from 7.5 grams of O2?

17.8 grams F2

7.5 divided by 32 times 6 divided by 3 times 38