A, because the number of valence shell electrons (outer shell electrons) tells us how much the element or compound wants to bond or give up electrons. Most compounds and elements want to have eight valence ectrons in it's outer ring. So if an atom is far away from having eight, it will want to react more often.
W=(m'/m)·100%
m'=37.2 g
m=48.5 g
w=(37.2/48.5)·100%=76.7%
Answer:
333.33 KPa
Explanation:
P1V1=P2V2
p2=P1v1/v2
p2= (2.50 L* 100 kPa)/0.75 L
P2=333.33 kPa
