Biology, 12.07.2019 12:50 jere0797

The oxygen that we are all taught is a product of photosynthesis comes from what?

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Biology, 22.06.2019 21:00, hamptonjeleesa

An adult inhales about 6.0×10−4 m3 of fresh air during a breath. only 20% of fresh air is oxygen. assume the pressure in the lungs is 1.0×105 paand the air is at a temperature of 300 k. how many oxygen molecules are in each breath? a. 1.4x10^23 b. 2.9x10^21 c. 4.9x10^-4 d. 2.9 x10^25