Please help me I will give you the brain thing with extra points if you help me, please. I need to get this right. 7/10

If 1.63 times 10 negative 4 of helium dissolves in 100.0g of water, what is the concentration in parts per million

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?

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.