If Argon is 39.948, calculate average at kc mass of argon
To calculate the average atomic mass of argon (Ar), we need to consider the isotopes of argon and their respective abundances.
Argon has three naturally occurring isotopes: Ar-36, Ar-38, and Ar-40. The atomic masses for these isotopes are 36 amu, 38 amu, and 40 amu respectively.
To calculate the average atomic mass, we use the formula:
Average Atomic Mass (M) = (Mass of Isotope1 * Abundance1) + (Mass of Isotope2 * Abundance2) + ...
Let's find the average atomic mass for argon:
Step 1: Determine the abundances of each isotope.
The relative abundances for the three isotopes are approximately:
Ar-36: 0.3365 (or 33.65%)
Ar-38: 0.0632 (or 6.32%)
Ar-40: 0.6002 (or 60.02%)
Step 2: Calculate the average atomic mass using the formula mentioned above.
M = (36 amu * 0.3365) + (38 amu * 0.0632) + (40 amu * 0.6002)
M = 12.1064 + 2.3976 + 24.008
M = 38.512 amu
Therefore, the average atomic mass of argon (Ar) is approximately 38.512 amu.