(Relative atomic mass: H = 1, C = 12, N = 14,0 = 16, Na = 23, Cl = 35.5, K = 39, Fe = 56,
Pb
=...
Chemistry, 10.04.2021 14:00 micvar9646
(Relative atomic mass: H = 1, C = 12, N = 14,0 = 16, Na = 23, Cl = 35.5, K = 39, Fe = 56,
Pb
= 207; Avogadro constant, N : 6.02 x 1023 mol-'; Molar volume = 22.4 dm' mol-1 at STP or
24 dm' mol-at room conditions)
1. Calculate the molar mass of each of the following substances:
(a) Lead metal, Pb
(c) Sodium nitrate, NaNO,
(b) Chloroform, CHCI,
(d) Iron(III) oxide, FeO,
Answers: 2
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