Through which material do sound waves tend to move fastest A:Cold Air
B:Metal
C:Water
D:Warm air

The answer would be B. Metal

Explanation:

Sound travels the fastest in solids

so what is the problem with your lab report and whats the subject of the lab report? i will you

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