What would the volume of gas be -150 degrees celsius, if it had a volume of 693 mL at 45 degrees celsius?

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.

Compare and contrast physical changes with chemical changes.

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?