calculate the percent by mass of carbon(c) in the amino acid arginine,C6H16N4.
%C = (mass C/molar mass)*100 = ??
To calculate the percent by mass of carbon (C) in the amino acid arginine (C6H16N4), we need to know the molar mass of carbon and the molar mass of arginine.
The molar mass of carbon (C) is approximately 12.01 g/mol.
To calculate the molar mass of arginine (C6H16N4), we add up the molar masses of each element in the molecular formula:
C6H16N4 = (6 * molar mass of C) + (16 * molar mass of H) + (4 * molar mass of N)
The molar mass of hydrogen (H) is approximately 1.01 g/mol, and the molar mass of nitrogen (N) is approximately 14.01 g/mol.
Now we can calculate the molar mass of arginine:
(6 * 12.01 g/mol) + (16 * 1.01 g/mol) + (4 * 14.01 g/mol) = 174.20 g/mol
Next, we can calculate the mass of carbon in arginine by multiplying the molar mass of carbon (12.01 g/mol) by the number of carbon atoms in arginine (6):
Mass of carbon = (12.01 g/mol) * 6 = 72.06 g
To calculate the percent by mass of carbon, we divide the mass of carbon by the molar mass of arginine and multiply by 100:
Percent by mass of carbon = (Mass of carbon / Molar mass of arginine) * 100
= (72.06 g / 174.20 g/mol) * 100
= 41.39%
Therefore, the percent by mass of carbon in the amino acid arginine is approximately 41.39%.
To calculate the percent by mass of carbon (C) in the amino acid arginine (C6H16N4), you need to determine the molar mass of carbon and then calculate the molar mass of arginine.
Step 1: Calculate the molar mass of Carbon (C)
The atomic mass of carbon (C) is approximately 12.01 g/mol.
Step 2: Calculate the molar mass of arginine (C6H16N4)
To calculate the molar mass of arginine, you need to sum up the molar masses of all the constituent elements. Here's how to do it:
C6H16N4:
6 atoms of Carbon (C) = 6 x 12.01 g/mol = 72.06 g/mol
16 atoms of Hydrogen (H) = 16 x 1.01 g/mol = 16.16 g/mol
4 atoms of Nitrogen (N) = 4 x 14.01 g/mol = 56.04 g/mol
Total molar mass of Arginine (C6H16N4) = 72.06 g/mol + 16.16 g/mol + 56.04 g/mol = 144.26 g/mol
Step 3: Calculate the percent by mass of Carbon in Arginine
To calculate the percent by mass of Carbon, you need to divide the molar mass of Carbon by the molar mass of Arginine and multiply by 100%.
Percent by mass of Carbon (C) = (molar mass of Carbon / molar mass of Arginine) x 100%
= (72.06 g/mol / 144.26 g/mol) x 100%
= 0.500 x 100%
= 50%
Therefore, the percent by mass of Carbon (C) in the amino acid arginine (C6H16N4) is 50%.