Answer:
Scientific Notation: 4.45963 x 109 km (29.811 A.U.) Scientific Notation: 4.53687 x 109 km (30.327 A.U.) By Comparison: If you weigh 100 pounds on Earth, you would weigh 110 pounds on Neptune.
<span>((P1V1/T1)=(P2V2/T2))</span>
Out of the choices given, the one that describes a substance whose atoms all have the same number of protons are an element. The correct answer will be B.
