Need help with 2 and 3

V1t2 = v2t1 is an expression of who’s law

If you have 5.25 grams of methane (ch4), how many grams of co2 will you produce ?

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.