Question

Calculate the formula masses of the following compounds.(Na=23u, O=16u,

Al=27u)

i) Sodium Oxide ii) Aluminium Oxide


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Answer 1

Answer:

i)Formula mass of Na2O = 2(23)+1(16)

= 46+16

= 62 u

ii)Formula mass of Al2O3 = 2(27)+3(16)

= 54+48

= 102 u