## Chemistry: A Molecular Approach (3rd Edition)

Published by Prentice Hall

# Chapter 2 - Sections 2.1-2.9 - Exercises - Problems by Topic: 49

#### Answer

$1.83 \times 10^{3}$ electrons

#### Work Step by Step

Mass of 1 electron = 0.00055 amu Mass of 1 proton = 1.00866 amu So, number of electrons needed to equal mass of 1 proton = $\frac{1.00866}{.00055}$ = $1.83 \times 10^{3}$ electrons.

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