What is the mass of 3.02 x 1025 formula units of barium nitrate?

Darla claims that the first periodic table developed by mendeleev was not completely accurate, so it is not useful at all. harmony argues that it establish the periodic table we use today, making it more credible. who is correct and why? darla is correct, because a model that has any mistakes should be thrown out. darla is correct, because a good model would not need to change. harmony is correct, because mendeleev’s model had all of the information correct in the first version. harmony is correct, because mendeleev’s model made predictions that came true.

Which best describes how johannes kepler developed his laws of planetary motion

If two objects at different te,peraure are in contact with each other what happens to their temperature