Problem: Use the mass spectrum of europium to determine the atomic mass of europium.Where the peak representing Eu-151 has an exact mass of 150.91986 amu and percent intensity is assumed be to exactly 91.610%, and the peak representing Eu-153 has an exact mass of 152.92138 amu and percent intensity of 100.00%.

FREE Expert Solution

First, we have to convert this mass spect data into percent abundance.

The data sets Eu-153 at 100% intensity meaning the percentage that we see for Eu-151 is relative to Eu-153.

To get percent abundance we have to make it relative to the total. We do that with the equations below:

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Problem Details

Use the mass spectrum of europium to determine the atomic mass of europium.

Mass spectrum of europium with percent intensity on the vertical axis and mass (amu) on the horizontal axis. The spectrum includes the percent intensities of two isotopes of europium, Eu-151 and Eu-153.

Where the peak representing Eu-151 has an exact mass of 150.91986 amu and percent intensity is assumed be to exactly 91.610%, and the peak representing Eu-153 has an exact mass of 152.92138 amu and percent intensity of 100.00%.


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Based on our data, we think this problem is relevant for Professor Davies' class at FGCU.