SEMESTER 2 REVIEW

Density

100

4.67g / 32.8mL. Find Density and say if it sinks or floats.

What is FLOAT?

200

1.74g/mL X 63mL. Find the mass.

1.92g

300

22.95g / 15.45cm. Find density. Say if it sinks or floats.

1.49g/cm. The object sinks.

400

41g / 3.2g/mL. Find the volume.

12.81mL.

500

97kg / 105L. Find the density. Say if it sinks or floats.

0.92. This object floats.

Molar Mass

100

What is the molar mass of nitrogen (N)?

14 g/mol

200

What is the molar mass of sodium chloride (NaCl)?

58.5 g/mol

300

What is the molar mass of magnesium oxide (MgO)?

40.3 g/mol

400

What is the molar mass of potassium nitrate (KNO3)?

101.1 g/mol

500

What is the molar mass of glucose (C6H12O6)?

180 g/mol

Moles to Grams

100

1 mol of Cu = _____ g of Cu

63.5 g

200

3 mol of B = _____ g of B

32.4 g

300

45 g of Sc = _____ mol of Sc

1 mol

400

5 mol of CO2 = ______ g of CO2

220 g

500

12 g of O2 = _____ mol of O2

0.375 mol

Molarity

100

What is the molarity of this solution? 3 mol of CuCl2 in 1 L of water

3 M

200

What is the molarity of the following solution? 4 mol of NaCl in 3500 mL of water

1.14 M

300

What is the molarity of the following solution? 30 g of F in 1 L of water

1.6 M

400

How many moles of C are present in the following solution? 1 L of 2 M solution

2 mol of C

500

How many moles of P were added to the following solution? 500 mL of 3 M solution

1.5 mol of P

Stoichiometry

100

CO2 + 2LiOH --> Li2CO3 + H2O How many moles of lithium hydroxide are required to react with 20 mol of CO2?

What is 40 mol LiOH?

200

6CO2 +6H2O --> C6H12O6 + 6O2 How many moles of carbon dioxide are needed to react with 3.25 mol of water in the reaction described above?

What is 3.25 mol CO2?

300

2Mg +O2 --> 2MgO How many moles of magnesium oxide are produced from 1.2 moles of magnesium?

What is 1.2 mol MgO?

400

Sodium and chlorine react to produce sodium chloride (table salt; MM=58.5 g/mol). Determine the amount of product that can be produced from 24.7 g of sodium and excess chlorine.

What is 62 g NaCl?

500

When copper (II) chloride reacts with sodium nitrate, copper (II) nitrate and sodium chloride are formed. If 15 g CuCl2 (MM=134.5 g/mol) react with 20 g NaNO3 (MM=85 g/mol), how much sodium chloride (MM = 58.5 g/mol) can be formed?

What is 13.0 g NaCl?