A sample of an iron oxide weighing 14.8 g is heated in astream of H2 until it ha

Question

A sample of an iron oxide weighing 14.8 g is heated in astream of H2 until it has completely converted to iron. Ifthe iron produced has a mass of 10.36g, THE PERCENTAGE BY WEIGHT OFOXYGEN in the original oxide must have been.... A) 14.3 % B) 70.0% C) 30.0% D) 85.7% E) 4.44% A sample of an iron oxide weighing 14.8 g is heated in astream of H2 until it has completely converted to iron. Ifthe iron produced has a mass of 10.36g, THE PERCENTAGE BY WEIGHT OFOXYGEN in the original oxide must have been.... A) 14.3 % B) 70.0% C) 30.0% D) 85.7% E) 4.44%

Explanation / Answer

C. 14.8-10.36= 4.44 since 10.36 was of iron and it is by weightbecause its in g so the oxide percent is 4.44/14.8= .3 x100%= 30% PLEASE RATE!!! THX!

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