STOICHIOMETRY: A chemist combines barium and oxygen in a synthesis reaction to form barium oxide. If she starts with 4.25 moles of barium, how many moles of oxygen will react with the barium.

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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.

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

Which statement best explains the relationship between an area is geography and the temperature of its surface water