Chemistry and Chemical Reactivity (9th Edition)

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

Let's Review: The Tools of Quantitative Chemistry - Study Questions: 34

Answer

$n=2$

Work Step by Step

For this calculation, digits that are not significant numbers will be underlined, and the numbers will have up to 4 decimal places to avoid rounding off errors: $-0.1875=0.2\underline{5}-\frac1{n^2}$ $\frac1{n^2}=0.4\underline{375}$ $n^2=2.\underline{2857}$ $n=1.\underline{5118}$ Rounding to one significant number $n=2$
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