The Mole (Leaving Cert Chemistry): Quizzes

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The Mole
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12 questions from this quiz

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What is the value of Avogadro's constant?

6.02×10236.02 \times 10^{23}

What volume does 1 mole of any gas occupy at STP?

22.4 litres

What is the standard temperature in STP conditions?

273 K

What is the standard pressure in STP conditions?

1 atmosphere (101.3 kPa)

How is molar mass related to relative molecular mass (MrM_r)?

Numerically equal

What is the MrM_r of water (H2OH_2O)?

18 g/mol

What is the mass of 0.5 moles of Ca(OH)2Ca(OH)_2 where Mr=74M_r = 74?

37 g

How many moles are in 0.64 g of O2O_2 where Mr=32M_r = 32?

0.02 moles

How many molecules are in 0.02 moles of water?

1.2×10221.2 \times 10^{22}

How many moles are in 1.12 litres of oxygen gas at STP?

0.05 moles

How many atoms are in 1.2×10221.2 \times 10^{22} molecules of H2OH_2O?

3.6×10223.6 \times 10^{22}

What do ions separate by in a mass spectrometer?

Mass-to-charge ratio

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