Why are water molecules polar? select one: a. they contain two kinds of atoms. b. the electrons in the covalent bonds spend more time closer to the oxygen nucleus. c. the hydrogen bonds are weak. d. they have covalent bonds?

When the following equation is balanced using the smallest possible integers, what is the coefficent of oxygen gas? c7h16o(g) + o2(g) → co2(g) + h2o(g) -1 -5 -8 -16 -21

Put these processes of the water cycle in the correct order, starting at the point where the water is in the lake: 1. water evaporates into the atmosphere 2. rain, snow, or other precipitation falls 3. water collects into larger bodies of water 4. water vapor condenses into liquid water

1) this is the structure in the cell nucleus that houses a cell's genetic information