Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning
ISBN 10: 1133949649
ISBN 13: 978-1-13394-964-0

Chapter 2 Atoms, Molecules, and Ions - Study Questions: 162

Answer

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Work Step by Step

After heating, only tin oxide is left in the crucible. Number of moles of tin metal: $(14.710-13.457)\ g\div 118.71\ g/mol=0.01056\ mol$ Number of moles of oxygen atoms: $(15.048-14.710)\ g\div 15.9994\ g/mol=0.02112\ mol$ Ratio: $0.02112/0.01056=2.00$ Empirical formula: $SnO_2$
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