Balanced equation for the neutralization of these 2 hcl , ca(oh)2

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 diagram shows the correct way to represent an ionic compound of magnesium oxide?

Use the periodic table to determine how many grams of oxygen would be required to react completely with 859.0 g c2h2