Calculate the number of water molecule and number of oxygen and hydrogen atoms in a drop of water containing 0.03mol of water.
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Answer. Number of water molecules in 0.03 mol of water = 0.03 x 6.022 x 1023 = 1.8 x 1022 molecules of water. 1 water molecule(H2O) contain 1 oxygen atoms. So, number of oxygen atoms in 0.03 mole of water = 0.03 x 6.022 x 1023 = 1.8 x 1022 atoms of oxygen.
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