Moles!

What does not belong?

• particles
• atoms
• elements
• molecules

What is the molar mass of carbon dioxide?

• 44
• 49
• 16
• 20

What is the molar mass of ammonium bromide?

• 97.943
• 27.051
• 28.851
• 155.367

What is the molar mass of nickel (II) nitrate?
Hint: Nickel (II) nitrate is Ni(NO₃)₂

• 150.703
• 104.698
• 46.005
• 163.391

How many moles are in 13.43 grams of H₂S? (Remember Sig Figs!)

• 0.3941
• 0.3940
• 2.538
• 2.537

Convert 0.987 moles of sodium nitride to grams.  Use Sig Figs!

• 82.977
• 37.0
• 84.1
• 81.9

How many molecules are in 3.546grams of carbon tetrachloride?  (Use Sig Figs!)

• 1.388x10²²
• 0.02305x10²²
• 153.8
• 1.39x10²²

What is the mass in 5.20 x 10²¹ atoms of lead (II)  nitride? Use Sig Figs!

• 650
• 4.82x10⁴²
• 5.61
• 5.614

How many moles is 4 grams of Calcium?

• 0.10 moles
• 10 moles
• 44 moles
• 160 moles

How many grams are in 3.3 mol of Potassium Sulfide?

• 360 g
• 454 g
• 238 g
• 132 g