   Chapter 2, Problem 14PS

Chapter
Section
Textbook Problem

What is the mass of one 16O atom, in grams? (The mass of an 16O atom is 15.995 u.)

Interpretation Introduction

Interpretation:

The mass of one 16O in grams has to be determined, if the mass of 16O is 15.995u.

Concept introduction:

• The mass of carbon is assigned or standardized as 12u.
• The mass of atoms are taken as relative to carbon atomic mass (12u), thereby the mass of any atom other than carbon is called relative mass.
• 1 atomic mass unit (u) is one-twelfth of the mass of a carbon atom, that is,

1u=1.66054×1024g

Explanation

The mass of 16O is given as 15.995u

One atomic mass unit (u) is one-twelfth of the mass of a carbon atom, that is,

1u=1.66054×1024g

Therefore,

The mass of 16O atom in grams is,

15

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