Moles Sets Random Retrieval

This quiz contains all the questions in the Moles Sets section. The website will pick 10 questions at random.

1 / 10

How many moles of CuSO₄ are dissolved in 30cm³ of 0.5mol dm^-3 CuSO₄?

0.150 mol

0.030 mol

0.015 mol

0.003 mol

2 / 10

If 0.3 moles of KBr are dissolved in 200cm³ of solution, what is the concentration of the solution?

0.5 mol dm^-3

1.0 mol dm^-3

1.5 mol dm^-3

2.0 mol dm^-3

3 / 10

What volume of oxygen is required for complete combustion of 1 dm³ of methane?

CH₄ + 2O₂ => CO₂ + 2H₂O

Assume all volumes are measured at the same temperature and pressure:

0.5 dm³

1 dm³

2 dm³

24 dm³

4 / 10

How many moles of molecules are present in 2.40 dm³ of argon? (all volumes measured at r.t.p.)

5 / 10

6 / 10

Work out the names of each of the following compounds from their formula. Use the data sheet Names & Formulae of Some Common Ions

Formulae are Case Sensitive.

Remember to use regular numbers in formulae e.g. H2O not H₂O

HBr

7 / 10

Calculate the mass of oxygen having the same number of molecules as 7.10g of chlorine

8 / 10

Calculate the mass of silicon that contains the same number of atoms as 10.0g of calcium

9 / 10

Calculate the relative molecular mass (formula mass) of copper (II) sulfate pentahydrate CuSO₄ ●5H₂O

10 / 10

Identify the element (write the symbol) if an atom of Z is one-third of the mass of a ¹²C atom.

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