A sample of O2occupies 75 L at 1 atm. If the volume of the sample doubles, what is the new pressure of O2?
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in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

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1 is the answer to this problem