Stoichiometry IGCSE
Authored by Nabihah Zainol
Chemistry
9th - 11th Grade
NGSS covered
Used 577+ times
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16 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
An oxide of nitrogen has the following composition by mass: N, 30.4%; O, 69.6%.
It has a relative molecular mass of 92.
What is the molecular formula of the oxide of nitrogen?
NO
NO2
NO4
N2O4
Tags
NGSS.HS-PS1-1
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which statements are correct?
1 and 2
1 and 4
2 and 3
3 and 4
Tags
NGSS.HS-PS1-7
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The relative formula mass, Mr, of calcium carbonate, CaCO3, is 100.
What is the mass of carbon present in 100 g of calcium carbonate?
12 g
40 g
36 g
60 g
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The compound magnesium nitrate has the formula Mg(NO3)2.
What is the relative formula mass of magnesium nitrate?
86
134
148
172
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Propane burns in oxygen.
C3H8 + xO2 → 3CO2 + yH2O
Which values of x and y balance the equation?
x = 5, y = 4
x = 7, y = 4
x = 10, y = 8
x = 13, y = 8
Tags
NGSS.HS-PS1-7
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A
B
C
D
Tags
NGSS.HS-PS1-7
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A
B
C
D
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