As the air molecules move through the valve they have friction as they hit the walls, and its this friction that causes it to heat up.
<span>B. Hydrogen is electrically neutralized in the solution. Hydrogen is a chemical element with symbol H and atomic number 1. With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table.</span>
Answer: petroleum
because it is a fossil fuel like coal, and natural gas.
17 protons 17 electrons 18 neutrons
The correct answer that would best complete the given statement above is option B. Heat in a substance is an example of a kinetic energy. Kinetic energy is a kind of energy that is in motion. We can feel the kinetic energy of heat through their temperatures because heat is being transferred.
