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Chemistry, 13.01.2021 22:00 spiritcampbell56
Magnesium has two naturally occurring isotopes: magnesium-24 and magnesium-25. if the average atomic mass of magnesium is 24.305 amu, what are the percent abundance's of each isotope?
a. 69.5% and 30.5%
b. 50% and 50%
c. 62% and 38%
d. 0.7% and 0.3%
e. .62% and .38%
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Chemistry, 22.06.2019 19:20, evansh78
Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?
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Magnesium has two naturally occurring isotopes: magnesium-24 and magnesium-25. if the average atomic...
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