Calculate the most probable speed of an ozone molecule in the stratosphere, where the temperature is 270 k.'

9.672m/s The most probable speed of a molecule at a given temperature is: Vmp=sqrt(2*R*T/M) where R is the gas constant, T is the absolute temperature, and M is the molar mass of the gas. R is 8.314J/(mol*K) T is given as 270K Molar mass must be calculated using the fact that Ozone has 3 oxygen atoms and oxygen has an atomic mass of 15.999. 15.999*3 = 47.997 Plugging this in to the formula gives: sqrt(2*8.314*270/47.997) = sqrt(4489.56/47.997) = 9.672m/s

The sun's parallax would be 180 degrees, greater than which you can't get.  so a. would be your anwser 

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