[Answered] A sample is composed of 2.78 g of iron and 1.19 g of oxygen. The empirical formula is _______

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LCritchfi

Hero Member
Posts: 519

on: Aug 27, 2018

A sample is composed of 2.78 g of iron and 1.19 g of oxygen. The empirical formula is ________.

A) FeO2
B) Fe2O5
C) Fe2O3
D) FeO

Question 2

Essentially all of the mass of an atom is due to the

A) protons.
B) neutrons.
C) nucleons.
D) electrons.

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JaynaD87

Sr. Member
Posts: 368

Reply #1 on: Aug 27, 2018

Answer to Question 1

C

Answer to Question 2

C

LCritchfi

Member
Posts: 519

Reply 2 on: Aug 27, 2018

Wow, this really help

duy1981999

Member
Posts: 341

Reply 3 on: Yesterday

Gracias!

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