The contamination of atmosphere air due to gaseous substance A. air pollution
B. water pollution
C. air
D. soil
plz answer the question

Now consider the reaction when 45.0 g naoh have been added. what amount of naoh is this, and what amount of fecl3 can be consumed by it?

Why do scientists look for patterns in the world? a. patterns can explain observations. b. patterns never change, no matter what. c. patterns are easy for scientists to detect. d. patterns are all the same, through all time.

The clouds are grey and ground is wet. a quantitative b qualitative