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This set of MCQs helps you brush up on important chemistry topics and prepare you to dive into skill practice.
How many atoms of iodine are in a mole of iodine?
53
26.9
6.02 x 10^23
6.02 x 10^25
We use the periodic table to calculate.
Atomic number
Moles
Mass
Molar mass
If I need 20.4 moles of sodium chloride, how much should I weigh out,
564
1192
112
192
How many particles would be in 8.4 moles of Octane?
5.04 x 10^24
5.77 x 10^24
5.04 x 10^26
5.77 x 10^26
How many moles of NaCl are in the salt shaker if the mass of the salt in the salt shaker is 170 grams?
2.1 mole NaCl
2.9 mole NaCl
2.5 mole NaCl
2.4 mole NaCl
A water bottle contains 1.98E25 molecules of water. How many grams of water are in a bottle of water?
542 g H2O
594 g H2O
582 g H2O
592 g H2O
If 11.74 liters of gas STP are pumped into a basketball, how many moles of gas are in the basketball? Assume the ball was completely empty prior to filling it with gas.
0.5224 mole gas
0.5229 mole gas
0.5239 mole gas
0.5989 mole gas
What would be the mass of 1.5mol H2O?
20
27
32
30
