Imagine that you have four food dyes to test, a, b, c and d. imagine that you are going to investigate which food dye diffuses most quickly. a, which variable will you change?
b, which variable will you measure? how will you do this? you can draw a diagram if it helps you to explain.

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72