What is the range of sunspot activity between 1700 and 1800

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate

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