Magnesium bromide (one magnesium atom with two bromine atoms) has a chemical formula of MgBrz. If you look at the total atomic mass of MgBr2,
does magnesium or bromine make up more of the mass?

they are exactly the same
it is impossible to tell
magnesium
bromine

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.

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.