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A compound contain 12% of carbon, 16% of oxygen, 28% of nitrogen, 4% of hydrogen and 40% calcium by weight, then what can be the possible formula of the compound?

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A compound contain 12% of carbon, 16% of oxygen, 28% of nitrogen, 4% of hydrogen and 40% calcium by weight, then what can be the possible formula of the compound?

(a) C2H3N2Ca(OH)

(b) CH4N4Ca2(OH)

(c) CH3N2Ca2(OH)

(d) None of the mentioned

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My query is from Analyses of Multicomponent Solutions and Mixtures in portion Moles, Density & Concentration of Basic Chemical Engineering

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The correct option is (c) CH3N2Ca2(OH)

Easy explanation: Ration of number of atoms, carbon: hydrogen: oxygen: nitrogen: calcium = 12/12: 4/1: 16/16: 28/14: 40/20 = 1:4:1:2:2.

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