Name: ____________________________
Date: _____________
Chemistry – Study Guide
Ch 10 Study Guide Due: ________________
Chapter 10 Test – ___________________
When studying for this test, use your ‘do nows’, notes, homework, class handouts, and
your textbook.
Vocabulary
Avogadro’s number
Mole
molar mass
equivalence statement
conversion factor
For all questions involving calculations, you must show all work, round your
answers to the correct number of significant figures, and label your final answers
with the correct units.
Measuring Matter - Chapter 10 – Section 10.1 – Pgs. 320-324
1. Which of the following is NOT a representative particle?
a. Atom
b. Anion
c. Cation
d. All are representative particles
2. Avogadro’s number of representative particles is equal to one
a. Kilogram
b. Gram
c. Mole
d. Amu
3. How many atoms of potassium does 1 mol of potassium contain?
4. How many moles of xenon are equivalent to 5.66 x 1026 atoms?
Name: ____________________________
Date: _____________
5. How many moles contain the given quantity?
a. 1.25 x 1015 molecules of CO2
b. 3.59 x 1021 formula units of Na2NO3
c. 3.25 x 1020 atoms of Pb
6. How many atoms are present in 236 moles of arsenic?
Mass and the Mole - Chapter 10 – Section 10.2 – Pgs. 325-332
7. Explain the difference between atomic mass and molar mass.
Atomic mass is the mass of an individual particle. Molar mass is the mass of a mole
of particles.
8. Which contains more atoms, a mole of silver atoms or a mole of gold atoms?
Explain your answer.
Both contain the same number of atoms because 1 mole of any substance equals
6.02 x 1023 representative particles.
9. Which element has a molar mass of 30.97 g/mol?
a. Potassium
b. Gallium
c. palladium
10. Perform the following conversions:
a. 3.50 mol of Li to g of Li
b. 7.65 g of Co to mol of Co
c. 5.62 g of Kr to mol of Kr
d. 0.0550 mol of As to g of As
Name: ____________________________
Date: _____________
11. Convert each to mass in grams.
a. 4.22 x 1015 atoms U
b. 1.25 x 1022 atoms O
12. Perform the following conversions.
a. 25.8 g of Hg to atoms of Hg
b. 3.54 x 1025 atoms of P to g of P
c. 0.124 g of Mg to atoms of Mg
Moles of Compounds - Chapter 10 – Section 10.3 – Pgs. 323-340
13. Which the correct molar mass for the compound FeSO4?
a. 103.85 g/mol
b. 151.85 g/mol
c. 415.40 g/mol
d. 247.85 g/mol
14. Calculate the molar mass for the following compounds:
a. (NH4)2CO3
b. Ba(NO3)2
c. CaBr2
d. K2SO4
Name: ____________________________
Date: _____________
15. What is the mass of each compound?
a. 4.50 x 10-2 mol of CuCl2
b. 1.25 x 102 mol of Ca(OH)2
16. How many moles are in 100.0 g of each compound?
a. Dinitrogen oxide (N2O)
b. Methanol (CH3OH)
17. What volume will 1.75 moles of NH3 gas occupy at STP?
1.75 mol NH3 X 22.4 L
1
1 mol
=
39.2 L NH3
18. What volume will 73.3 g of O2 occupy at STP?
73.3 g O2 x 1 mol x 22.4 L
1
32.00 g 1 mol
=
51.3 L O2
Name: ____________________________
Date: _____________