Problem: Glycine, an amino acid used by organisms to make proteins, is represented by the molecular model below.Calculate how many moles of glycine are in a 140.0-g sample of glycine.

NH2 is single bonded to CH2, which is single bonded to a C that is double bonded above to O and right to OH.

white - hydrogen (5)
black - carbon (2)
red - oxygen (2)
blue - nitrogen (1)

Glycine formula: C₂H₅NO₂

molar mass = 75.08 g/mol

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Glycine, an amino acid used by organisms to make proteins, is represented by the molecular model below.

NH2 is single bonded to CH2, which is single bonded to a C that is double bonded above to O and right to OH.

Calculate how many moles of glycine are in a 140.0-g sample of glycine.

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Mole Concept concept. You can view video lessons to learn Mole Concept. Or if you need more Mole Concept practice, you can also practice Mole Concept practice problems.

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Based on our data, we think this problem is relevant for Professor Nagavelli's class at HCC.