Methane gas is produced from the reaction of solid carbon and hydrogen gas: c(s)+2h2(g)→ch4(g) . how many liters of hydrogen gas at standard temperature and pressure (stp) are required to produce 40 liters of methane?

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.