Acertain element has a melting point over 700 ∘c and a density less than 2.00 g/cm3. what is one possible identity for this 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.

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles

A40 kilogram skier starts at the top of a 12 meter high slope. at the bottom, she is travelling 10 meters per second. how much energy does she lose to friction