Chemistry, 20.08.2019 18:00 amandanunnery33
Element x is found in two forms: 90.0% is an isotope that has a mass of 20.0, and 10.0% is an isotope that has a mass of 22.0. what is the atomic mass of element x?
a. 20.0
b. 20.2
c. 20.8
d. 21.2
e. 21.8
can anyone explain this one for me?
Answers: 1
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Element x is found in two forms: 90.0% is an isotope that has a mass of 20.0, and 10.0% is an isoto...
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