When tuning a guitar, a musician plays two strings at once. these sound waves overlap and often appear to get louder and softer if the strings are not in tune. this interaction of overlapping waves is called question 2 options: diffraction interference reflection refraction

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!

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~ trueboss72

the dissolution of polymer can be thermodynamically described in 2 steps.