Some communities have banned detergents containing high levels of phosphates beacause?

Are hallucinogen a clinically useful drugs?

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.

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %