Chemistry, 13.11.2020 21:50 desiwill01
There are two isotopes of an unknown element, X-19 and X-21. The abundance of X-19 is 12.01%. A weighted average uses the percentages of each isotope to scale their contribution to the total mass. Each isotope's contribution is the percentage (in decimal form) multiplied by the mass of the isotope. What is the contribution (in amu) to the weighted average from the X-19 isotope, which has a mass of 19.00 amu?
Answers: 2
Chemistry, 22.06.2019 07:10, jasondesatnick
An experimental procedure requires a 10 ml of acid to be dissolved
Answers: 2
There are two isotopes of an unknown element, X-19 and X-21. The abundance of X-19 is 12.01%.
A wei...
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