At an atmospheric pressure of 870 mm hg with 21 percent oxygen, the partial pressure of oxygen is ) 219 mm hgb) 127 mm hgc) 151 mm hgd) 182 mm hge) 100 mm hg

d) 182 mm Hg

Explanation:

The ratio of partial pressure to total pressure is equal to the molar ratio.

P / 870 mm Hg = 0.21

P = 182 mm Hg

Answer is D.

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.

the current is 0.6

voltage ÷ resistance = current

so 12 ÷ 20 = 0.6