What is the mass of− (a)1 mole of nitrogen atoms? (b)4 moles of aluminium atoms(Atomic mass of aluminium =27)? (c)10 moles of sodium sulphite (Na2SO3)?
Open in App
Solution
(a) 1 mole of nitrogen atoms=1×massofN=1×14=14g
(b) 4 moles of aluminium atoms=4×27=108g
(c) 10 moles of sodium sulphite(Na2SO3)=10×MassofNa2SO3.
Mass of Na2SO3=2×MassofNaatom+1×MassofSatom+3×MassofOatom