An unkown element has been found to occur in two different stable isotopes. One isotope has an abundance of 57.21 percent and has a mass of 120.9 amu. The other isotope has an abundance of 42.79 percent and has a mass of 122.9 amu. What is the average atomic mass of the unknown element?
Answers: 2
Chemistry, 22.06.2019 06:30, cadenhuggins2
Predict whether the changes in enthalpy, entropy, and free energy will be positive or negative for the boiling of water, and explain your predictions. how does temperature affect the spontaneity of this process?
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On the periodic table, elements are arranged by which of the following. a. mass numbers. b. increasing atomic number. c. alphabetical order. or d. density
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How many liters of water can be produced from 5.0liters of butane gas at stp, assuming excess oxygen? c4h10(g) + 02(g) → co2 (e) + h2o (g)
Answers: 2
An unkown element has been found to occur in two different stable isotopes. One isotope has an abund...
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