Determine the Percent Composition of Potassium Dichromate, K₂Cr₂O₇

Multiple Choice

Determine the percent composition of potassium dichromate, K₂Cr₂O₇.

A) 17.5% K, 46.6% Cr, 35.9% O
B) 29.8% K, 39.7% Cr, 30.5% O
C) 36.5% K, 48.6% Cr, 14.9% O
D) 37.2% K, 24.7% Cr, 38.1% O
E) none of the above