How many grams of nitrogen dioxide are in 1.28 x 10^23 molecules of nitrogen dioxide (NO2)?
A. 9.78g of NO2
B. 9.78 moles of NO2
C. 9.78 x 10^23
D. 9.78 g x10^23

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.

i think it's letter a.

plasma - state of matter made up of electrically charged particles