Glycine, an amino acid used by organisms to make proteins, isrepresented by the

Question

Glycine, an amino acid used by organisms to make proteins, isrepresented by the molecular model below(which I am not able topaste in this page, so please refer to the book for the model).
Part A Write its molecular formula. Express your answer as a chemicalformula.
Part B Determine its molar mass.
Part C Calculate the mass of 2 moles of glycine.
Part D Calculate the percent nitrogen by mass inglycine.



Part A Write its molecular formula. Express your answer as a chemicalformula.
Part B Determine its molar mass.
Part C Calculate the mass of 2 moles of glycine.
Part D Calculate the percent nitrogen by mass inglycine.


Part B Determine its molar mass.
Part C Calculate the mass of 2 moles of glycine.
Part D Calculate the percent nitrogen by mass inglycine.

Part C Calculate the mass of 2 moles of glycine.
Part D Calculate the percent nitrogen by mass inglycine.
Part D Calculate the percent nitrogen by mass inglycine.

Explanation / Answer

molecular formula of Glycine isNH2CH2COOH molar mass of Glycine , NH2CH2COOHis = 14 + 2 * 1 + 12 + 2 * 1 + 12 + 2 * 16 + 1 = 63 g mass of 1 mole glycine , m = 63 g So mass of 2 moles of glycine = 2 * 63 = 126 g 63 g of glycine contains 14 g of Nitrogen
So , the percent nitrogen by mass in glycine is = ( mass of N /mass of Glycine ) * 100                                                                      = ( 14 / 63 ) * 100                                                                      = 22.22 %

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