Stoichiometry IGCSE

Stoichiometry IGCSE

Assessment

Assessment

Created by

Nabihah Zainol

Chemistry

9th - 11th Grade

531 plays

Hard

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16 questions

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1.

Multiple Choice

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

2.

Multiple Choice

5 mins

1 pt

Media Image

Which statements are correct?

1 and 2

1 and 4

2 and 3

3 and 4

3.

Multiple Choice

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

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

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

6.

Multiple Choice

5 mins

1 pt

Media Image

A

B

C

D

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