Both nitric oxide and nitrogen dioxide are pollutants that can lead to acid rain and global warming; collectively, they are called "NOx" gases. In 2004, the United States emitted an estimated 20 million short tons of nitrogen dioxide into the atmosphere. How many grams of nitrogen dioxide is this? Note that one short ton equals 2,000 lb.

1.8 *10^13 g of NO2

Explanation:

if 1 short ton  of NO2 = 2000Ib OF NO2

20 million short tons of NO2 = 20 * 10^ 6 * 2 * 10^3/1

= 40 * 10^9 Ib

If 1 pound (lb) =  453.59237 grams (g).

40 * 10^9 Ib =40 * 10^9  * 453.59237/1

= 1.8 *10^13 g of NO2

93.2 ml + 3920 ml = 4013 ml total  

(93.2 ml) * (2.03 m) / (4013 ml) = 0.0471 m

the volume in in l of the diluted solution would be 0.0471 m.

b.final