Which of the following statements is true? Temperature is an average measure of the heat energy in a substance.
The transfer of heat in a fluid does not require physical contact between molecules.
The sun's energy comes from the nuclear reactions of changing hydrogen into helium.
All of the above.

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

Acontrol during an experiment. might change remains constant does not exist does change

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?