2.
(i) Define formula unit. Calculate the formula unit
mass of Na, CO2. (Given atomic mass :
Na = 23 u, C = 12 u, O = 16 u)
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1
Answer:
Formula mass is the sum of the atomic masses of the elements in a compound...
Na=23
CO2=12+(2×16)
=44g..
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Answer:Formula unit is the sum of the atomic masses of all atoms present in a formula unit of a compound
eg: formula unit mass for (NaCl)
= 1×23+1×35.5=58.5u
Na = 1×23 = 23u
Co2 = 1×12+2×16 =44 u
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