What is the percentage composition of sodium? (C=12 g/mol, N=14 g/mol, Na=23 g/mol, O=16 g/mol, H=1 g/mol)

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.

What term describes technology that operates on an atomic level

Which is the most concentratic acid