calculate the molality and the mole fraction of the solute in aqueous solution containing 3g urea per 250g of water
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Answer:Ozone in the upper atmosphere absorbs high-energy ultraviolet (UV) radiation coming from the Sun. This protects living things on Earth's surface from the Sun's most harmful rays. Without ozone for protection, only the simplest life forms would be able to live on Earth.Feb 24, 2012
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