Unit 8: Stoichiometry

Scientific Notation

100

Convert to normal notation: 3 x 10³ L

3000 L

200

Convert to normal notation: 2.5 x 10^-2 mol

0.025 mol

300

Convert to scientific notation: 920 g

9.2 x 10² g

400

Convert to scientific notation: 0.000780 km

7.80 x 10^-4 km

500

Convert to scientific notation: 40 mi

4 x 10¹ mi

Dimensional Analysis

100

How many centimeters are in 400 m?

40,000 cm

200

How many miles are in 850 km?

528 mi

300

How many minutes are in 0.7 days?

1008 min

400

How many kilometers are in 3,000 in?

0.0762 km

500

How many nanometers are in 0.003 ft?

914,400 nm

Conversions

100

How many particles are in 4 mol of Li?

2.4 x 10²⁴ particles

200

How many grams are in 0.2 mol of Na?

4.6 g

300

How many particles are in 5 g of Carbon?

2.5 x 10²³ particles

400

How much does 1.5 x 10²³ particles of CaS weigh?

17.97 g CaS

500

How many particles are in 75 g of Ba(OH)₂?

2.64 x 10²³ molecules

Stoic4 Al + 3 O2 + 6 H2O → 4 Al(OH)3

100

If you have 3 mol of Al how many moles of O₂ do you need?

2.25 mol O₂

200

How many moles of H₂O do you need if you have 15 g of Al?

0.83 mol H₂O

300

How many grams of Al(OH)₃ can you make from 10 g of O₂?

32.5 g Al(OH)₃

400

How many particles of O₂ do you need to react with 4.9 x 10²⁴ particles of H₂O?

2.45 x 10²⁴ particles of O₂

500

How many particles of Al(OH)₃ can 40 g of Al make?

8.9 x 10²³ particles Al(OH)₃

Stoic4 NH3 + 6 NO → 5 N2 + 6 H2O

100

If you have 2.2 mol of water, how many moles of N₂ did you also make?

1.83 mol N₂

200

How many grams of water can you make from 0.4 mol of NO?

7.2 g H₂O

300

How many grams of N₂ can you make from 75 g of NH₃?

187 g of N₂

400

How many particles of NO do you need to produce 3.5 x 10²³ particles of N₂?

4.2 x 10²³ particles of NO

500

How many grams of NO do you need to make 2.0 x 10²⁴ particles of water?

99.6 g of NO