   Chapter 2.1, Problem 2.1CYU

Chapter
Section
Textbook Problem

1. What is the mass of an iron atom with 30 neutrons? 2. A nickel atom with 32 neutrons has a mass of 59.930788 u. What is its mass in grams? 3. How many protons, neutrons, and electrons are in a 64Zn atom?

(1)

Interpretation Introduction

Interpretation:

The mass number of an iron atom should be determined if the 30 neutrons are there in an iron atom.

Concept Introduction:

Equation for mass number is,

massnumber=numberofprotons+numberofneutrons

The mass in grams of an atom is the obtained from actual mass by converting it into grams.

Equation for Mass of an atom is,

massingrams=actualmass×1.66054×10-24g

There are 30  protons, 30 electrons and 34  neutrons in 64Zn atom.

Explanation

Iron atom has 26 protons and 30  neutrons.

Equation for mass number is,

massnumber=numberofprotons+number

(2)

Interpretation Introduction

Interpretation:

The mass in grams of a nickel atom should be determined if nickel atom has 32  neutrons and a mass of 59.930788u.

Concept Introduction:

Equation for mass number is,

massnumber=numberofprotons+numberofneutrons

The mass in grams of an atom is the obtained from actual mass by converting it into grams.

Equation for Mass of an atom is,

massingrams=actualmass×1.66054×10-24g

There are 30  protons, 30 electrons and 34 neutrons in a 64Zn atom.

(3)

Interpretation Introduction

Interpretation:

The numbers of protons, neutrons and electrons are in  64Zn atom should be determined.

Concept Introduction:

Equation for mass number is,

massnumber=numberofprotons+numberofneutrons

The mass in grams of an atom is the obtained from actual mass by converting it into grams.

Equation for Mass of an atom is,

massingrams=actualmass×1.66054×10-24g

There are 30 protons, 30 electrons and 34 neutrons in 64Zn atom.

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