Concept explainers
Interpretation:
Amount of C, N, O and H must be calculated as present in the 100 g of given compound in which % of C, N, O and H are 19.68, 22.95, 52.42 and 4.96 % respectively.
Concept introduction:
Mass % of an element in a compound is the amount of the element per 100 g of the compound.

Answer to Problem 189A
Amount of C, N, O and H are 19.68 g, 22.95 g, 52.42 g and 4.96 g respectively.
Explanation of Solution
As % of C in the compound is 19.68, so 100 g of the compound must contain 19.68 g C.
As % of N in the compound is 22.95, so 100 g of the compound must contain 22.95 g N.
As % of O in the compound is 52.42, so 100 g of the compound must contain 52.42 g O.
As % of H in the compound is 4.96, so 100 g of the compound must contain 4.96 g H.
Thus, amount of C, N, O and H is 19.68 g, 22.95 g, 52.42 g and 4.96 g respectively in 100 g of the given compound.
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