Compare the energy of an electron in the first electron shell to the energy of an electron in the second electron shell in an atom of isotope E. (Hint: Does the data even matter?)

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

How many grams of phosphorus are contained in 5.09 moles of phosphorus?

Which of the following molecules is polar? c3h7oh c2h5cooh