   # 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 64 Zn atom? ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

#### Solutions

Chapter
Section ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 2.2, Problem 1CYU
Textbook Problem
287 views

## 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:

Atomic number (Z) is defined as number of protons present in an atom.  In a neutral atom number of protons is equal to number of electrons.

Mass number (A) is the sum of protons and neutrons.

### Explanation of Solution

Atomic number of Iron is 26 and hence has 26 protons.

Iron atom has 30 neutrons.

The mass number of iron atom is given below,

Mass no.=No

(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:

The mass in grams of an atom is the obtained from actual mass using the given formula,

Massg=Actualmass×1.66054×10-24g

3

Interpretation Introduction

Interpretation:

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

Concept Introduction:

Refer to (a).

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