GCSE Chemistry Percentage Mass Calculations
Chemistry
10th Grade
NGSS covered
Used 17+ times
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13 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the % by mass of O in H2O
88.8%
80%
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the % by mass of O in SO2
(Ar S = 32, O = 16)
40%
50%
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the % by mass of Na in Na2CO3 (Ar Na = 23, C = 12, O = 16)
44.3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
% by mass of N in Ca(NO3)2
(Ar Ca = 40, N = 14, O = 16)
19.1%
17.07%
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the % by mass of O in Ca(NO3)2
(Ar Ca = 40, N = 14, O = 16)
63.5%
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
% by mass of Cl in FeCl3
(Ar Fe = 56, Cl = 35.5)
30%
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the % by mass of N in NH4NO3
(Ar N = 14, H = 1, O = 16)
53%
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