Calculate the pH of a solution formed by mixing 200.0 mL of 0.300 M NaHSO4 with 200.0 mL of 0.200 M Na2SO4 and 1.0 ml 1.00 M NaOH. The Ka2 for H2SO4 is 1.2 × 10-2.

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.

Aperfume bottle is dropped in the corner of a room. the odor of the perfume can be detected on the other side of the room. which statement best describes this observation?

What type of organic molecule comprises the majority of a potato?