NEW
Font size
WorksheetsUnit #5 Exam Review
Total questions: 10
Worksheet time: 13mins
Molar Mass of Iron(III) Sulfate
399.88g/mol
151.85g/mol
6.02X1023
87.92
The molecular weight of PCl3 is ________ amu.
137.33
122.44
155.55
420.00
The number of grams in 0.350 mol of Na is ________.
42
8
42.3
.8
50.0 g of Cl2 contains ________ mol Cl2.
70
.7
1.42
35.45
How many molecules are present in 4.25 mol of CCl4?
2.56 × 1024
2.56 × 1026
2.56 × 1023
1.56 × 1024
A ball of Iron contains 4.0 x 1024 atoms. The number of grams of Fe (Iron) is
2.4 x 1048
3765g
6.6 x 1033
371g
How many atoms of oxygen are in one molecule of H2SO4?
6.02 × 1023
2
4
8
Determine the total atoms in 12g of N2O5.
108 atoms
.11 atoms
6.6x1022 atoms
4.7x1023 atoms
Use the graph to help you answer the following question. If 1 metric ton = 1,000 kg how many kg of CO2 were released in 1970 due to human consumption of fossil fuels?
150 X 1013 kg of CO2
1.5 X 1013 kg of CO2
1.5 X 109 kg of CO2
150 X 1010 kg of CO2
A compound is comprised of 75% carbon, 25% hydrogen and has a molar mass of 80 g/mole. Determine the compounds molecular formula. (Hint: do not confuse this with the empirical formula)
C8H8
CH
C5H20
CH4
