How did the planets in our solar system form?

Part of molten rock at mid-ocean ridges

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next

How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?