A compound that contains only nitrogen and oxygen is found to be 69.6 % oxygen by mass

CHEMISTRY · Single correct · A Level · Chemistry · Amount of substance · Amount of substance

Problem

A compound that contains only nitrogen and oxygen is found to be 69.6 % oxygen by mass. Which of the following is the empirical formula of the compound? (a) N2O3\mathrm{N_2O_3} (b) NO2\mathrm{NO_2} (c) NO\mathrm{NO} (d) N2O5\mathrm{N_2O_5}

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