Answer:
C. The conditions in which a substance exists in a certain phase.
Explanation:
<span>O2 travels slower than H2, Ne, N2, and CO. This is due to the fact that O2 has a heavier molecular weight than the others. O2 has a weight of 32 grams per mole. N2 and CO are the next highest with 28 grams per mole. Ne is 20 grams per mole, and H2 is 2 grams per mole.</span>
The answer Is C.the layer of rock they're found in
The answer is N. Hope this helped
