   Chapter 2, Problem 110GQ

Chapter
Section
Textbook Problem

The recommended daily allowance (RDA) of iron for women 19-30 years old is 18 mg. How many moles is this? How many atoms?

Interpretation Introduction

Interpretation:

The number of moles and the number of atoms for the given amount of iron intake of women are needed to be calculated.

Concept introduction:

• Conversion formula for mass of a molecule into number moles,

Numberofmoles=MassingramsMolarmass

• Equation for finding number of molecules from number of moles of a molecule,

Numberofmolecule=numberofmolesofmolecule×6.022×1023molecules/mol

Explanation

The amount of iron intake for women’s is given that 18mg.

The molar mass of iron is 55.845g.

Conversion formula for mass of a molecule into number moles,

Numberofmoles=MassingramsMolarmass

Therefore,

The number moles of iron is,

Numberofmoles=18×103g55.845g/mol=3

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started 