## Chemistry and Chemical Reactivity (9th Edition)

a) Root mean square speed is inversely proportional to the molecular weight, so: $NO_2\lt O_2\lt NO$ b) Since $P\propto n$: $150\ mmHg/P_{O_2}=2/1$ $P_{O_2}=75\ mmHg$ c) Since $P\propto n$: $150\ mmHg/P_{NO_2}=2/2$ $P_{NO_2}=150\ mmHg$