EASY Which of the following shows how mechanical energy has both stored energy and energy in motion?

The energy from food can make us move.
The energy from an outlet can toast the bread.
The energy from the sun can help plants grow.
The energy of water blocked by a dam can turn big turbines.

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?

Which statement justifies that hydrogen peroxide (h2o2) is a polar molecule? the o – h bond is nonpolar and the molecule is asymmetric. the o – h bond is nonpolar and the molecule is symmetric. the o – h bond is polar and the molecule is asymmetric. the o – h bond is polar and the molecule is symmetric.