   # What number of atoms of phosphorus are present in 1.00 g of each of the compounds in Exercise 52? ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243

#### Solutions

Chapter
Section ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 5, Problem 62E
Textbook Problem
205 views

## What number of atoms of phosphorus are present in 1.00 g of each of the compounds in Exercise 52?

(a)

Interpretation Introduction

Interpretation: The mass of compound is given. By using the mass, the number of phosphorous atoms present in each of the compound given in exercise 52 is to be determined.

Concept introduction: The atomic mass is defined as the sum of number of protons and number of neutrons.

Molar mass of a substance is defined as the mass of the substance in gram of one mole of that compound.

The molar mass of any compound can be calculated by adding of atomic weight of individual atoms present in it.

The amount of substance containing 12g of pure carbon is called a mole. One mole of atoms always contains 6.022×1023 molecules. The number of molecules in one mole is also called Avogadro’s number.

To determine: The number of phosphorous (P) atoms in 1.00g of P4O6 .

### Explanation of Solution

Given

The mass of P4O6 is 1.00g .

The molar mass of P4O6 is 219.866g/mol .

Formula

The number of moles in P4O6 is calculated as,

MolesofP4O6=MassofP4O6MolarmassofP4O6

Substitute the values of mass and molar mass of P4O6 in above equation.

MolesofP4O6=MassofP4O6MolarmassofP4O6=1.00g219.866g/mol=0.0045mol

Since, one mole of P4O6 is equal to four moles of phosphorous, Therefore, 0

(b)

Interpretation Introduction

Interpretation: The mass of compound is given. By using the mass, the number of phosphorous atoms present in each of the compound given in exercise 52 is to be determined.

Concept introduction: The atomic mass is defined as the sum of number of protons and number of neutrons.

Molar mass of a substance is defined as the mass of the substance in gram of one mole of that compound.

The molar mass of any compound can be calculated by adding of atomic weight of individual atoms present in it.

The amount of substance containing 12g of pure carbon is called a mole. One mole of atoms always contains 6.022×1023 molecules. The number of molecules in one mole is also called Avogadro’s number.

To determine: The number of phosphorous (P) atoms in 1.00g of Ca3(PO4)2 .

(c)

Interpretation Introduction

Interpretation: The mass of compound is given. By using the mass, the number of phosphorous atoms present in each of the compound given in exercise 52 is to be determined.

Concept introduction: The atomic mass is defined as the sum of number of protons and number of neutrons.

Molar mass of a substance is defined as the mass of the substance in gram of one mole of that compound.

The molar mass of any compound can be calculated by adding of atomic weight of individual atoms present in it.

The amount of substance containing 12g of pure carbon is called a mole. One mole of atoms always contains 6.022×1023 molecules. The number of molecules in one mole is also called Avogadro’s number.

To determine: The number of phosphorous (P) atoms in 1.00g of Na2HPO4 .

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