Part a what is the concentration of hydroxide ions in pure water at 30.0°c, if kw at this temperature is 1.47 × 10-14? what is the concentration of hydroxide ions in pure water at 30.0°c, if kw at this temperature is 1.47 × 10-14? 1.21 × 10-7 m 1.30 × 10-7 m 1.47 × 10-7 m 8.93 × 10-8 m 1.00 × 10-7 m

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.

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.

Water is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place? from a gas to a liquid from a liquid to a gas from a solid to a liquid from a gas to a plasma