Download Chapter 6 worksheet : Mole conversions

Honors Chemistry
Name _________________________________
Chapter 3: Mole Conversions Worksheet II
Date _____/_____/_____
Period _____
1. Calculate the representative particles (atoms, formula units, or molecules) for each of the
following:
a. 0.873 g of ammonia (NH3)
c. 1.34 g of cesium
b. 5.12 moles of iron III sulfite (Fe2(SO3) 3)
2. Calculate the atoms of oxygen in each of the following :
a. 6.16 g of potassium permanganate (KMnO4)
b. 0.245 moles of iron II sulfate (FeSO4)
c. 17.3 g of carbonic acid (H2CO3)
d. 0.317 moles of sodium hydroxide (NaOH)
3. Calculate the mass of calcium in each of the following :
a. 5.43 g of calcium hydroxide (Ca(OH)2)
b. 2.54 x 1022 atoms of calcium
c. 8.13 moles of calcium atoms
4. Calculate the moles of silver in each of the following :
a. 33.1 moles of silver phosphate (Ag3PO4)
b. 0.789 g of silver sulfide (Ag2S)
c. 5.89 x 1021 atoms of silver dichromate (Ag2Cr2O7)
d. 0.943 g of silver.
5. How many molecules will be found in 1.55 moles of water?
6. How many atoms are in 3.81 moles of the element boron?
7. Calculate how many atoms are in 0.856 g of gold.
8. Calculate how many moles are in 5.22 x 1024 molecules of chlorine.
9. Calculate how many moles are in 75.6 g of Lead.
10. How many atoms of oxygen are found in 0.100 g of mercury IV oxide (HgO2)?
11. How many molecules will be found in 66.9 g of sulfur dioxide (SO2)?
12. Determine the percent composition for each of the following compounds:
a. aluminum in Al2O3
c. calcium in Ca2(PO4) 3
b. sulfate in Na2SO4
d. ammonium in (NH4)2CO3
13. Determine the percent composition of water in each of the following hydrates:
a. Na2CO3 • 10 H2O
c. CuSO4 • 3 H2O
b. BaCl2 • 2 H2O
d. Ca(NO3) 2 • 5 H2O