What is the osmolarity of a solution containing 0.1 M NaNO3 and 0.2 M NaCl?

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.

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure

Light waves can move through , but they travel fastest when they move through a(n) .