Science Topics
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1. The difference in polarity between CO2 and SO2 can be explained by their molecular shape. The CO2 has a linear shape, being O=C=O. There are two electron domains around the central carbon atom, therefore it is linear (Niles, 2004). There is no charge on the molecule because there are no lone electron pairs. The SO2 molecule is a bent molecule, existing as a resonance structure, with a lone pair of electrons on the S. The molecule has an S-O single bond and an S=O double bond. The molecule is trigonal planar because there are three electron domains around the central sulfur atom. 2. The hydronium ion, H3O, has a positive charge on one of the H ions in the molecule, which has a trigonal pyramidal configuration. The NH3 molecule also has a trigonal pyramidal configuration, giving the molecule an overall dipole moment and making it polar (Ammonia, 2005). The nitrogen atom has a lone pair of electrons so it acts as a base.
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Some common words found in the essay are:
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Approximate Word count = 633
Approximate Pages = 3 (250 words per page)
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