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.

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

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