Calculate the atomic mass of element "X",if it has 2 naturally occurring isotopes with the following masses and natural abundances: X-45 44.8776 amu 32.88%
X-47 46.9443 amu 67.12%
A) 46.26 amu
B) 45.91 amu
C) 46.34 amu
D) 46.84 amu
E) 44.99 amu

Question

Quizplus · Accepted Answer

The atomic mass is calculated by multiplying the mass of each isotope by its natural abundance (expressed as a decimal), and then summing these values: (44.8776 * 0.3288) + (46.9443 * 0.6712) = 46.26 amu.

Calculate the Atomic Mass of Element "X",if It Has 2