Fundamentals of Biochemistry: Life at the Molecular Level 5th Edition

Published by Wiley
ISBN 10: 1118918401
ISBN 13: 978-1-11891-840-1

Chapter 2 - Water - Exercises - Page 40: 3


6.022 x 10$^{23}$

Work Step by Step

As the density of water is 1 $\frac{gram}{milliliter}$, 18 mL of water is equal to 18 grams. Thus, the given mass is 18 grams. Molecular Mass of H$_{2}$O = (16+2) x 1 = 18 grams Number of Moles = $\frac{Given Mass}{Molecular Mass}$ Number of Moles = $\frac{18}{18}$ Number of Moles =1 We can now calculate the number of molecules using this formula: Number of Molecules = Number of Moles x Avogadro Number Number of Molecules = 1 x 6.022 x 10$^{23}$ Numer of Molecules = 6.022 x 10$^{23}$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.