How many moles of no₂ would be required to produce 2. 30 moles of hno₃ in the presence of excess water in the following chemical reaction? 3 no₂(g) + h₂o (l) → 2 hno₃(g) + no(g).

Did the universe cool off or get hotter as it expanded after the 'big bang"?

In this food web, which group would increase in number if snakes were eliminated? a. producers b. decomposers c. primary consumers d. secondary consumers e. tertiary consumers

Essay questions may also be referred to as a. talk questions c. hard questions b. explain questions d. think questions