Question

What is the molar mass of aspartic acid, C₄O₄H₇N?

A) 197g/mol
B) 133g/mol
C) 70g/mol
D) 43g/mol

Answer 1

B 133g/mol

Step-by-step explanation:

Let me explain the calculation of the molar mass of aspartic acid. In aspartic acid, we have: - 4 carbon atoms (C), each with a molar mass of 12.01 g/mol - 4 oxygen atoms (O), each with a molar mass of 16.00 g/mol - 7 hydrogen atoms (H), each with a molar mass of 1.01 g/mol - 1 nitrogen atom (N) with a molar mass of 14.01 g/mol To find the molar mass, we multiply the number of atoms of each element by their respective molar masses and add them up: (4 * 12.01) + (4 * 16.00) + (7 * 1.01) + (1 * 14.01) = 48.04 + 64.00 + 7.07 + 14.01 = 133.12 g/mol

Answer 2

The molar mass of aspartic acid, C₄O₄H₇N, is 133.106 g/mol by summing up the molar masses of its constituent atoms. Therefore, the correct answer is B) 133g/mol.

Step-by-step explanation:

To calculate the molar mass of aspartic acid with the formula C₄O₄H₇N, we must sum the molar masses of each element in the compound based on the number of atoms of each element present. The atomic masses of carbon (C), oxygen (O), hydrogen (H), and nitrogen (N) are approximately 12.01 g/mol, 16.00 g/mol, 1.008 g/mol, and 14.01 g/mol, respectively. Using these atomic masses:

For Carbon: 4 atoms × 12.01 g/mol = 48.04 g/mol

For Oxygen: 4 atoms × 16.00 g/mol = 64.00 g/mol

For Hydrogen: 7 atoms × 1.008 g/mol = 7.056 g/mol

For Nitrogen: 1 atom × 14.01 g/mol = 14.01 g/mol

Adding these amounts together gives a total molar mass for aspartic acid of 133.106 g/mol. Therefore, the correct answer is B) 133g/mol.