A compound contains 38.7% K,13.9% N,and 47.4% O by mass.What is the empirical formula of the compound? A)KNO₃ B)K₂N₂O₃ C)KNO₂ D)K₂NO₃ E)K₄NO₅

Question

Quizplus · Accepted Answer

To find the empirical formula, divide the percent by the atomic mass of each element to find the mole ratio: K (38.7%/39.1 = 0.99), N (13.9%/14.0 = 0.99), O (47.4%/16.0 = 2.96). Simplifying the ratios to whole numbers gives KNO3.

A Compound Contains 38