How many grams of sulfur trioxide are required to produce 2.00 mol of sulfuric acid in an excess of water?

If a certain battery supplies 1.0×108 electrons per second to the negative terminal and the battery contains 7.00 moles of electrolytic solution (which means the solution contains 7.00 moles of hso4), what fraction of the solution undergoes a chemical reaction each second

What is the value of keq for the reaction expressed in scientific notation

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )