Question

What is the mass of

(a) 1 mole of nitrogen atoms

(b) 4 moles of aluminium atoms

(c) 10 moles of oxygen molecules​

Answer 1

Answer:

Mass of 1 mole of nitrogen atoms = 14 g

4 moles of aluminium atoms

Mass of 1 mole of aluminium atoms = 27 g

Mass of 4 moles of aluminium atoms = (27 x 4) = 108 g

10 moles of sodium sulphite (Na2SO3)

Mass of 1 mole of Na2SO3 = 10 x [(2 x 23) + (32) + (3 x 16)]g = (46 + 32 + 48)g = 126 g

Mass of 10 moles of Na2SO3 = (126 x 10) = 1260 g

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Answer 2

Answer:

a. 1 mole of nitrogen atoms