The following are 1.0 m acid solution, which has the largest concentration of hydronium [h3o+]?

a. hno2

b. h2co3

c. h2so4

d. h3bo3

Aprimary producer stores 9,000 kcal. in the energy pyramid, if a primary producer is consumed by a first-level consumer, and that first-level consumer is consumed by a second-level consumer and the second-level consumer is consumed by a third-level consumer, how much energy is stored by the third-level consumer from the primary producer? *