How can you tell if a sample of matter is an element?

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 do you convert 4 mmol of bromobenzene to ml?

Which are forms of frozen water? check all that apply. dew frost hail rain sleet