Your body's "thermostat" is called the thyroid hypothalamus thalamus parathyroid

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.

In the reaction between a crushed antacid tablet and vinegar what gas is emitted

What happens to isotopes that are unstable?