Isotope Mass Isotopic Abundance
Silicon-28 27.9769 0.922
Silicon-29 28.9765 0.0467
Silicon-30 29.9738 0.0313
To calculate the atomic mass of silicon, we need to multiply the mass of each isotope by its respective abundance and sum them up.
Atomic mass of silicon = (Mass of Silicon-28 * Isotopic Abundance of Silicon-28) + (Mass of Silicon-29 * Isotopic Abundance of Silicon-29) + (Mass of Silicon-30 * Isotopic Abundance of Silicon-30)
= (27.9769 * 0.922) + (28.9765 * 0.0467) + (29.9738 * 0.0313)
= 25.72 + 1.35 + 0.94
= 28.01
Therefore, the atomic mass of silicon is approximately 28.01.
Calculate the atomic mass of silicon given the mass and natural occurrence of each isotope. Round your answer to the hundredths place.Isotope Mass Isotopic Abundance
1 answer