1. Metformin (C4H11N5) is an oral diabetes medicine that helps control blood sugar levels. Each tablet contains 500.0 mg of metformin. In performing the calculations, work must be shown to earn credit. • Calculate the molar mass of metformin.
129.164 g/mol

• Calculate the number of moles of metformin in a single tablet.

• Jennifer is told to take two tablets with her evening meal. Calculate the number of moles of metformin that Jennifer takes daily.

Vander waals forces are inter molecular bonds that exist within molecules of the same substance. a water molecule is made up of oxygen and hydrogen atoms which share electrons between each other. the vander waals forces are forces that exist between multitude of different  molecules of water. dipole dipole forces is the type of vander waals force that exist in water. the oxygen atom which is more electronegative pulls the shared electron closer to itself thus generating a partial negative charge while the hydrogen acquire a partial positive charge. these two different charges causes attraction to occur in water molecules.

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