The average rate of appearance of O2 is 1/2 the rate of disappearance of N2O5. What is the average rate of appearance of O2 from t = 0 to 141 min?Rate of disappearance of N2O5 = 1.18×10-3 M/min.

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 statement is best described as a atom

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.