Chemistry (7th Edition)

Published by Pearson
ISBN 10: 0321943171
ISBN 13: 978-0-32194-317-0

Chapter 2 - Atoms, Molecules, and Ions - Section Problems: 115

Answer

a) 0.2405 mol Ti b) 1.267 mol Na c) 6.205 mol U

Work Step by Step

Number of moles = Mass in grams/ Molar mass. a) Mass in grams = 11.51 g Molar mass = 47.867 g/mol Number of moles = $\frac{11.51g}{47.867g/mol}$ = 0.2405 mol. b) Mass in grams = 29.127 g Molar mass of Na = 22.99 g/mol Number of moles of Na = $\frac{29.127g}{22.99g/mol}$ = 1.267 mol c) Number of moles = $\frac{1477g}{238.029 g/mol}$ = 6.205 mol.
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