Biology, 24.04.2020 21:07, preciousweeks11
A certain element (X) has isotopes with mass numbers of 10 and 11. The X-10 isotope has an atomic mass of 10.013, and it represents 19.9% of all atoms of this element. The X-11 isotope has an atomic mass of 11.009, and it represents 80.1% of all atoms of this element. Therefore, the average atomic mass, or atomic weight, of this element is __ amu.
Round you answer to the nearest hundredth
Answers: 3
Biology, 21.06.2019 14:20, mattgraham366
When is a hurricane considered to have made landfall? a. when at least one inch of rain occurs b. when the eye reaches the land mass c. when the outer wind bands make landfall d. when it moves inland from the coast
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A certain element (X) has isotopes with mass numbers of 10 and 11. The X-10 isotope has an atomic ma...