Studies involving humans or animals are conducted under strict policies and procedures. this solution addresses which limitation?

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 are transitions between a liquid and a solid called? identify which way they are transitioning

Summarize possible ways in which phases of matter could combine to form a solution.