PDF chapter test TRY NOW
Answer the following question:
What is the mass of -
(a). 1 mole of nitrogen atoms?
Mass of 1 mole of nitrogen atoms = .
(b). 4 moles of aluminium atoms (Atomic mass of aluminium = 27)?
Mass of 1 mole of aluminium atoms = 27 g
∴ Mass of 4 moles of aluminium atoms = 27 x 4 = .
(c). 10 moles of sodium sulphite (\(Na_2SO_3\))?
Mass of 1 mole of \(Na_2SO_3\) = 2 x 23 + 32 + 3 x 16 = 46 + 32 + 48 = 126 g.
∴ Mass of 10 moles of \(Na_2SO_3\) = 126 x 10 = .
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