An imaginary element (X) on Mars is composed of three isotopes, 45.24% of isotope X-12 with a mass of 12.0 amu, 17.95% of isotope X-16 with a mass of 16.0 amu, and 36.81% of isotope X-18 with a mass of 18.0 amu. Calculate the atomic mass (in amu) of the element. Type in your answer with 3 significant figures.

Answer rating: 100% (QA)

Atomic weight of th... View the full answer