How many L of stock NH3 are needed to make 1.00 L of 2.00 M NH3? The stock solution is 14.8 M. M2V2 = M2V2​

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.

Can someone me with 3 and 4 plz. this is for masteries test.

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.