Free Printable C3 MOLE Q1

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C3 MOLE Q1

Total questions: 10

Worksheet time: 23mins

Name

Class

Date

A mole of carbon dioxide contains 6.02 x 10²³_____.

atoms

formula units

ions

molecules

How many molecules are there in 31.8 moles of water?

5.28 x 10^-23 molecules

1.91 x 10²⁵ molecules

5.28x 10-²⁵

1.91 x 10²²

How many moles of copper are 4.57 x 10¹³ atoms of copper?

7.59 x 10^-11 moles

2.75 x 10³⁷ moles

7.59 x 10¹¹ moles

2.75 x 10³³ moles

Determine the number of
atoms in
2.50 moles of zinc.

1.51 x 10²⁴ atoms

4.15 x 10^-24 atoms

2.71 x 10^-22 atoms

163 atoms

How many moles of sulfur atoms are there in 5.0 g of sulfur?

160 mol

8.3 x 10^-24 mol

0.16 mol

2.7 x 10^-22 mol

A sample of AlCl₃ contains a total of 4.515 x 10²⁷atoms of chlorine. What must be the mass of this sample?

2.500 x 10⁵ g

1.000 x 10⁶ g

18.75 g

3.333 x 10⁵ g

how many atoms are contained in a 456 g sample of carbon dioxide?

10.34 atoms

6.237 x 10²⁴atoms

1.871 x 10²⁵atoms

2.079 x 10²⁴ atoms

Which of the following gases occupies 12 dm³ at room temperature and pressure?

4 g of helium

16 g of oxygen

20 g of neon

44 g of carbon dioxide

260 g of hydrated cobalt(II) chloride contains 118 g of water of crystallisation. What is the molecular formula of the compound?

CoCl₂.2H₂O

CoCl₂.3H₂O

CoCl₂.6H₂O

CoCl₂.12H₂O

10.

0.8 g of sodium hydroxide is dissolved to form a 250 cm³ aqueous solution. What is the concentration of this solution?

0.02 mol/dm³

0.04 mol/dm³

0.08 mol/dm³

0.80 mol/dm³

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C3 MOLE Q1

Total questions: 10

Worksheet time: 23mins

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