A certain blue solid contains 36.84% N. What is the empirical formula of this compound?A sample of indium chloride weighing 0.5000 g is found to contain 0.2404 g of chlorine.What is the empirical formula of the indium compound?An unknown compound was found to have a percent composition as follows: 47.0 %potassium, 14.5 % carbon, and 38.5 % oxygen. What is its empirical formula? If the truemolar mass of the compound is 166.22 g/mol, what is its molecular formula?Rubbing alcohol was found to contain 60.0 % carbon, 13.4 % hydrogen, and the remainingmass was due to oxygen. What is the empirical formula of rubbing alcohol?

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A certain blue solid contains 36.84% N. What is the empirical formula of this compound?

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter9: Chemical Quantities

Section: Chapter Questions

Problem 7CR

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Concept explainers

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

Question

A certain blue solid contains 36.84% N. What is the empirical formula of this compound?
A sample of indium chloride weighing 0.5000 g is found to contain 0.2404 g of chlorine.
What is the empirical formula of the indium compound?
An unknown compound was found to have a percent composition as follows: 47.0 %
potassium, 14.5 % carbon, and 38.5 % oxygen. What is its empirical formula? If the true
molar mass of the compound is 166.22 g/mol, what is its molecular formula?
Rubbing alcohol was found to contain 60.0 % carbon, 13.4 % hydrogen, and the remaining
mass was due to oxygen. What is the empirical formula of rubbing alcohol?

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