What is the mass of 20 molecules of (nh4)2so4
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the horizontal distance between two towers is 90m . the angles of depression of the top of first tower when seen from second tower is 30. if the height of the second tower is 160m, find the height of the first tower
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Answer: molecular weight of the compound is 132
Explanation:
Mass of 20 molecules = 20x132
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