calculate the number of moles of glycine(gly)(C2H5NO2) an amino acid found in proteins in a 36.2g sample of glycine. can you show work
g glycine x (1 mol glycine/molar mass glycine) = ? or to make it a little easier to see without all of that typing it is
mols anything = grams anything/molar mass of anything. (It goes without saying that all of the anythings must refer to the same anything. ;-).
Sure! To calculate the number of moles of glycine in a given sample, you need to use the formula:
moles = mass / molar mass
1. The molar mass of glycine (C2H5NO2) can be calculated by summing up the atomic masses of all the elements in the chemical formula.
- Carbon (C) has an atomic mass of 12.01 g/mol.
- Hydrogen (H) has an atomic mass of 1.01 g/mol.
- Nitrogen (N) has an atomic mass of 14.01 g/mol.
- Oxygen (O) has an atomic mass of 16.00 g/mol.
Summing up the atomic masses:
(2 × 12.01 g/mol) + (5 × 1.01 g/mol) + 14.01 g/mol + (2 × 16.00 g/mol) = 75.07 g/mol
Therefore, the molar mass of glycine is 75.07 g/mol.
2. Now, you can plug the values into the formula:
moles = mass / molar mass
moles = 36.2 g / 75.07 g/mol
moles ≈ 0.482 moles (rounded to three decimal places)
So, there are approximately 0.482 moles of glycine in the 36.2g sample.