Help if u good at science lol Why does the arrow labeled Fnorm point upward?

O A. Gravity pushes up.

O B. The statue pushes up.

O C. The ground pushes up.

O D. Air resistance pushes up.

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins.co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule