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How many neutrons does the 13C isotope (carbon-13) of carbon have?  

Electron waves are what are called standing waves. Standing waves have a specific property that not just any wave is allowed. This is why only certain atomic orbital with specific energies are allowed to exist in an atom. The vibrations of a guitar string are also standing waves, only certain waves are allowed. In the diagram below, one of the waves is not allowed, if it were an atomic orbital, it would not exist, Which is it?

Estimate the probability of the event.Of 1,966 people who came into a blood bank to give blood, 337 people had high blood pressure. Estimate the probability that the next person who comes in to give blood will have high blood pressure.

Consider the following probability. P(−2.5 ≤ z ≤ 1) Shade the area under the standard normal curve corresponding to the probability above. FIG. 1 FIG. 2 FIG. 3 FIG. 4 FIG. 5

Which of the following was a graduate from West Point Military Academy:  

How many moles of CuO can be produced from  2.25 mol of Cu2O in the following reaction?                         2 Cu2O(s) + O2(g) → 4 CuO(s)

The assassin of Abraham Lincoln was _______

What political party is most closely associated with the opponents of Andrew Jackson and his political party

What are the spectator ions in the reaction between KCl (aq) and AgNO3 (aq)?

Glass of orange juice typically contains around 1.6 g of citric acid in 100 mL. What is the concentration of citric acid in the juice in M? Assume the molecular weight of citric acid is 192.12 g/mol. Give your answer to 3 decimal places.