How much air should be taken to obtain 2 meters per cubic meter of nitrogen, if the air contains 78% nitrogen?

decision:
x volume of air (which we need to find then by the formula for finding percent of the number) we get the following:
78/100 (fraction) x = 2
0.78x = 2
x = 2 / 0.78 (fraction)
x ~ 2.6m (cubed)
Answer: 2.6m (cubed)



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