
Moles & Stoichiometry
Quiz
•
Chemistry
•
9th - 12th Grade
•
Easy
Breanna Hummel
Used 1+ times
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21 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Which of the following is an empirical formula?
C6H12O6
C2H4O6
CH2O
C2H2O2
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
How many molecules are in 3.6 grams of sodium chloride (NaCl)?
0.06
1.0 X 1021
1.3 x 1026
3.7 x 1022
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the molar mass of C2H4O2?
40 g/mol
50 g/mol
60 g/mol
68 g/mol
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
The number 6.02 x 1023 is called...
Obama's number and it measures the amount of gases or liters in a mole
Bohr's number and it measures the amount of molecules or atoms in a sample
Avogadro's number and it measures the amount of gas in moles
Avogadro's number and it measures the amount of molecules or atoms in a sample
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
How many moles would be in 8.40 grams of octane, C8H18?
0.0735 moles
5.04 x 1024 moles
959 moles
0.645 moles
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
_N2 + _H2 → _NH3
What is the mole ratio between N2 and NH3 if you balanced the above equation correctly?
1 moles NH3 / 2 moles N2
2 moles NH3 / 1 moles N2
2 moles N2 / 3 moles NH3
1 moles N2 / 3 moles NH3
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
2Na + 2H2O → 2NaOH+ _H2
How many grams of hydrogen are produced if 120 g of Na are available?
5.2 g
2.6 g
690 g
45 g
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