In an experiment the gram atomic mass of magnesium was determined to be 24.7. Compared to the accepted value 24.3, the percent error for this determination was...
A.0.400
OB. 1.65
OC. 24.7
D. 98.4

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.

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

Compare and contrast physical changes with chemical changes.