Balance this half-reaction: no2- → no3- (acidic solution)

Balance atoms: (for everything except oxygen and hydrogen):

NO2- → NO3- (atoms are balanced)

Balance oxygen:

H2O + NO2- → NO3-

Balance hydrogen:

H2O + NO2- → NO3- + 2H+

Balance charge:

H2O + NO2- → NO3- + 2H+ + 2e-

Explanation:

Edmentum

explanation:

crosscutting concepts have application across all domains of science. as such, they are a way of linking the different domains of science. they include patterns; cause and effect; scale, proportion, and quantity; systems and system models; energy and matter; structure and function; and stability and change.

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).