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- 1. Multiple Choice
Which of the following is a unit for concentration of a solution?

mol dm

^{-3}cm

^{3}s^{-1}m s

^{-1} - 2. Multiple Choice
If 1.5 mol of copper sulfate is dissolved to make a solution with a volume of 2 dm

^{3}, what is the concentration of the solution?3 mol dm

^{-3}0.75 mol dm

^{-3}1.33 mol dm

^{-3} - 3. Multiple Choice
A solution has a volume of 650 cm

^{3}. What is the volume of this solution in dm^{3}?0.65 dm

^{3}650,000 dm

^{3}6.5 dm

^{3} - 4. Multiple Choice
How many moles of hydrochloric acid are present in 25 cm

^{3}of a solution which has a concentration of 0.1 mol dm^{-3}?2.5 moles

0.25 moles

0.0025 moles

- 5. Multiple Choice
Which law states that equal volumes of different gases contain the same number of molecules?

Newton's second law

Avogadro's law

The law of conservation of mass

- 6. Multiple Choice
A sample of methane gas has a volume of 120 cm

^{3}at room temperature and pressure. The molar volume is 24 dm^{3}. How many moles of methane are present in the sample?2,880 moles

5 moles

0.005 moles

- 7. Multiple Choice
What volume of carbon dioxide would be formed by the complete combustion of 20 cm

^{3}of ethene? The equation is:C

_{2}H_{4}(g) + 3O_{2}(g) → 2CO_{2}(g) + 2H_{2}O(l)20 cm

^{3}40 cm

^{3}80 cm

^{3} - 8. Multiple Choice
What volume of carbon dioxide gas will be produced by the complete combustion of 30g of carbon? Equation:

C(s) + O

_{2}(g) → CO_{2}(g)The molar volume is 24 dm

^{3}.30 dm

^{3}60 dm

^{3}120 dm

^{3} - Answer choicesTagsAnswer choicesTags