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Grade 129 grade science

What is the mass of
(a) 1 mole of nitrogen atoms?
(b) 4 moles of aluminium atoms
(c) 10 moles of sodium sulphite (Na2SO3)?

Profile image of Pawan Prajapati
5 Years agoGrade 12
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1 Answer

Profile image of Harshit Singh
5 Years ago
Dear Student


(a) Mass of 1 mole of nitrogen atoms = 14g
(b) 4 moles of aluminium atoms
Mass of 1 mole of aluminium atoms = 27 g
Mass of 4 moles of aluminium atoms = 27 × 4 = 108 g
(c) 10 moles of sodium sulphite (Na2SO3)
Mass of 1 mole of Na2SO3= 2 × 23 + 32 + 3 ×16
=46 + 32 + 48 = 126 g
Mass of 10 moles of Na2SO3= 126 × 10
= 1260 g


Thanks