## Chemistry 12th Edition

a) $118.39 in/s$ b) $180.38m/min$ c) $10.82km/h$
a) in/s 8.92 min for 1 mi (which is 63360 in) $1min=60seconds=\frac{63360}{8.92} in$ $\frac{63360}{8.92} in/s=frac{63360}{8.92\times60}$ $\approx 118.3856502242152466$ $=118.39 in/s$ b) m/min $1mi=1609m for 8.92 min$ $1 min = \frac{1609}{8.92} m$ $\approx180.3811659192825112m$ $=180.38m/min$ c) km/h $1609m=1.609km=\frac{8.92}{60}h$ $1h=\frac{(1.609\times60}{8.92}km$ $\approx 10.8228699551569507km/h$ $=10.82km/h$