Apycnometer is a simple device used for precise density determinations. from the data presented, together with the fact that the density of water at 20°c is 0.99821 g/ml, determine the density of methanol, in grams per milliliter.
empty 25.601 g
filled with water at 20°c 35.552 g
filled with methanol at 20°c 33.490 g

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.

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?

How is the shape of the poem “peer” connected to its meaning?