How do you calculate the mass of 6 moles of co2?

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.

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true