## Chemistry 9th Edition

a) 400000 b) 390000 c) 386000 d) 3.8550 * $10^{5}$
Count out the expected significant figures and figure out whether to round up or down a) Since 8 rounds up -> 400000 b) Since 5 rounds up -> 390000 c) Since 5 rounds up -> 386000 d) Since 0 rounds down -> 385500. However, since has 4 sig figs, we can convert this to scientific notation. 3.8550 * $10^{5}$