   # trong&gt;Exercise 8.9 Sevin, the commercial name for an insecticide used to protect crops such as cotton, vegetables, and fruit, is made from carbamic acid. A chemist analyzing a sample of carbamic acid finds 0.8007 g of carbon, 0.9333 g of nitrogen, 0.2016 g of hydrogen, and 2.133 g of oxygen. Determine the empirical formula for carbamic acid. ### Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781337399425

#### Solutions

Chapter
Section ### Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781337399425
Chapter 8.8, Problem 8.9SC
Textbook Problem
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## trong>Exercise 8.9 Sevin, the commercial name for an insecticide used to protect crops such as cotton, vegetables, and fruit, is made from carbamic acid. A chemist analyzing a sample of carbamic acid finds 0.8007 g of carbon, 0.9333 g of nitrogen, 0.2016 g of hydrogen, and 2.133 g of oxygen. Determine the empirical formula for carbamic acid.

Interpretation Introduction

Interpretation:

Empirical formula of the pesticide carbamic acid should be determined.

Concept Introduction:

Empirical formula of a compound is formula for proportions of element present in that compound. The actual number and arrangement of atoms of elements are not defined by empirical formula; molecular formula defines the arrangement and actual number of atoms.

### Explanation of Solution

For finding out empirical formula of the given pesticide following steps need to be followed:

1. Calculate the number of moles from the given mass of the element.
2. Divide each moles of t element with smallest number of moles calculated in step1.
 Element Atomic mass Given mass No. of moles Simplest moles ratio Carbon 12g 0.8007g 0.8007g×1mole12gC=0.066 0.0660.066=1 Hydrogen 1g 0.2016g 0.2016g×1mole1gH=0.201 0.2010.066=3.04 Nitrogen 14g 0

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