Draw the lewis structure with the atoms arranged as hocl. include all non-bonding electrons.

To create the lewis dot structure for hocl. We must calculuate the number of valence electrons. Hydrogen has 1 valence electron. Oxygen has 6 valence electrons. Chlorine has 7 valence electrons. These valence electrons add together for a total of 14 valence electrons. The Oxygen is placed in between the Hydrogen and the Chlorine. There are 8 valence electrons around the chlorine, two of which are shared with oxygen. There are 8 valence electrons around the oxygen, two shared with Hydrogen and 2 shared with chlorine, creating a total of the 14 valence electrons.

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Moles = mass/molar mass the molar mass of c20 = 12.011*20 = 240.22 g per mole therefore, the number of moles is 20 g / 240.22 g per mol = 0.0833 moles.