HOMEWORK #$1($Air Pollution, Water Pollution$)$

The National Ambient Air Quality Standard $($NAAQS$)$ for sulfur dioxide $(S{O}_2)$ is $0\mathrm{.}144pp{m}_v(24-$hr

average$).$ What is the concentration in $u\frac{g}{m^3}$ assuming an air temperature of $25$ degrees C $?$

A water sample contains $10mgN{O}_3-L.$ What is the concentration in $($a$)pp{m}_m,($b$)$ mole$\frac{s}{L},($c$)$ mg

$N{O}_3$ as $\frac{N}{L}($this is mass of N per L $),$ and $($d$)pp{b}_m?$

Formaldehyde $(C{H}_{2}O)$ is commonly found in the indoor air of improperly designed and constructed

buildings. If the concentration of formaldehyde in a home is $0\mathrm{.}7$ ppm $,$ and the inside volume is $800$ cubic

meters, what mass $($in grams$)$ of formaldehyde vapor is inside the home? Assume T$=298$K$,P=1$atm.

A water quality analysis of a well water used for drinking water in a rural home found an arsenic

concentration of $0\mathrm{.}5$ micromolar. This value seems very small to you. But you need to see if it still

exceeds the drinking water standard of $10pp{b}_m.$ Is the well water violating the standard $($and therefore

the water would require treatment$)?$ HOMEWORK #$1($Air Pollution, Water Pollution$)$A water sample contains $10mgN\frac{O_3^{-}}{L}.$ What is the concentration in $($a$)pp{m}_m,($b$)$ moles$/$L$,($c$)$ mg

$N{O}_3$ as $\frac{N}{L}($this is mass of N per L $),$ and $($d$)pp{b}_m?$

The National Ambient Air Quality Standard $($NAAQS$)$ for sulfur dioxide $(S{O}_2)$ is $0\mathrm{.}144pp{m}_v(24-$hr

average$).$ What is the concentration in $u\frac{g}{m^3}$ assuming an air temperature of $25$ degrees C $?$

A water sample contains $10mgN{O}_3-L.$ What is the concentration in $($a$)pp{m}_m,($b$)$ mole$\frac{s}{L},($c$)$ mg

$N{O}_3$ as $\frac{N}{L}($this is mass of N per L $),$ and $($d$)pp{b}_m?$

Formaldehyde $(C{H}_{2}O)$ is commonly found in the indoor air of improperly designed and constructed

buildings. If the concentration of formaldehyde in a home is $0\mathrm{.}7$ ppm $,$ and the inside volume is $800$ cubic

meters, what mass $($in grams$)$ of formaldehyde vapor is inside the home? Assume T$=298$K$,P=1$atm.

A water quality analysis of a well water used for drinking water in a rural home found an arsenic

concentration of $0\mathrm{.}5$ micromolar. This value seems very small to you. But you need to see if it still

exceeds the drinking water standard of $10pp{b}_m.$ Is the well water violating the standard $($and therefore

the water would require treatment$)?$HOMEWORK #$1($Air Pollution, Water Pollution$)$

The National Ambient Air Quality Standard $($NAAQS$)$ for sulfur dioxide $(S{O}_2)$ is $0\mathrm{.}144pp{m}_v(24-hr$

average$).$ What is the concentration in $u\frac{g}{m^3}$ assuming an air temperature of $25$ degrees C $?$