Question

expressed in number of ways, e.g., mass per cent, mole fraction, molarity and molality.
EXERCISES
1.1
1.2
1.3
Calculate the molar mass of the following:
(i) H0 (i) CO, (iii) CH.
Calculate the mass per cent of different elements present in sodium sulphate
(Na SO.).
Determine the empirical formula of an oxide of iron, which has 69.9% iron and
30.1% dioxygen by mass.
Calculate the amount of carbon dioxide that could be produced when
1 mole of carbon is burnt in air.
(ii) 1 mole of carbon is burnt in 16 g of dioxygen.
(iii) 2 moles of carbon are burnt in 16 g of dioxygen.
Calculate the mass of sodium acetate (CH.COONa) required to make 500 mL o
0.375 molar aqueous solution. Molar mass of sodium acetate is 82.0245 g mol
1.4
5​

Answer 1

Answer:

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Explanation: