Chemical Quantities (Calculations)
Authored by Anna Westergard
Chemistry
9th - 12th Grade
Used 99+ times
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16 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
How many moles are in 16.94g of water?
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
How many grams are in 1.2 x 1024 molecules of CO?
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A container with a volume of 893 L contains how many moles of air at STP?
20003.2 mol
39.9 mol
22.4 mol
none of the choices
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the percent composition of Benzene, C6H6?
H = 50%
H = 14.3%
H = 7.8%
H = 28.1%
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
If 45.0 g of Mg react with 19.5 g of oxygen, what is the % of magnesium in the resulting compound?
69.8%
30.2%
43.3%
12.9%
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the empirical formula for C4H6?
CH
CH3
C2H3
C4H6
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Which pair has the same empirical formula?
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