QuestionAugust 23, 2025

Average Atomic Mass Cakulate the average atomic mass of the following imaginary elements based on the information supplied. % occurrence isotope mass 1. Zb-318 34.71 317.999785 Zb-32 o 43.61 319.989061 Zb-322 21.68 322000088 2. Omg -420 20.05 419.979962 Omg-424 39.21 424.001321 Omg -425 40.74 424998356 3. Sa-291 20.01 291.020389 Sa-293 28.71 292.987681 Sa-295 51.28 295.011006 4. Bg-400 29.21 399.979962 Bg-404 40.05 404.001321 Bg-406 30.74 405.998356 5. Lp-372 51.28 372.000809

Average Atomic Mass Cakulate the average atomic mass of the following imaginary elements based on the information supplied. % occurrence isotope mass 1. Zb-318 34.71 317.999785 Zb-32 o 43.61 319.989061 Zb-322 21.68 322000088 2. Omg -420 20.05 419.979962 Omg-424 39.21 424.001321 Omg -425 40.74 424998356 3. Sa-291 20.01 291.020389 Sa-293 28.71 292.987681 Sa-295 51.28 295.011006 4. Bg-400 29.21 399.979962 Bg-404 40.05 404.001321 Bg-406 30.74 405.998356 5. Lp-372 51.28 372.000809
Average Atomic Mass Cakulate the average atomic mass of the following imaginary elements based on the information supplied. % occurrence isotope mass 1. Zb-318 34.71 317.999785 Zb-32 o 43.61 319.989061 Zb-322 21.68 322000088 2. Omg -420 20.05 419.979962 Omg-424 39.21 424.001321 Omg -425 40.74 424998356 3. Sa-291 20.01 291.020389 Sa-293 28.71 292.987681 Sa-295 51.28 295.011006 4. Bg-400 29.21 399.979962 Bg-404 40.05 404.001321 Bg-406 30.74 405.998356 5. Lp-372 51.28 372.000809

Solution
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Answer

Average Mass of Zb: 319.993 ### Average Mass of Omg: 423.420 ### Average Mass of Sa: 293.964 ### Average Mass of Bg: 403.457 ### Average Mass of Lp: 190.757 Explanation 1. Calculate Weighted Average for Zb Multiply each isotope's mass by its percentage occurrence, sum the results, and divide by 100. \text{Average Mass of Zb} = \frac{(317.999785 \times 34.71) + (319.989061 \times 43.61) + (322.000088 \times 21.68)}{100} 2. Calculate Weighted Average for Omg \text{Average Mass of Omg} = \frac{(419.979962 \times 20.05) + (424.001321 \times 39.21) + (424.998356 \times 40.74)}{100} 3. Calculate Weighted Average for Sa \text{Average Mass of Sa} = \frac{(291.020389 \times 20.01) + (292.987681 \times 28.71) + (295.011006 \times 51.28)}{100} 4. Calculate Weighted Average for Bg \text{Average Mass of Bg} = \frac{(399.979962 \times 29.21) + (404.001321 \times 40.05) + (405.998356 \times 30.74)}{100} 5. Calculate Weighted Average for Lp \text{Average Mass of Lp} = \frac{372.000809 \times 51.28}{100}

Explanation

1. Calculate Weighted Average for Zb<br /> Multiply each isotope's mass by its percentage occurrence, sum the results, and divide by 100.<br /> $ \text{Average Mass of Zb} = \frac{(317.999785 \times 34.71) + (319.989061 \times 43.61) + (322.000088 \times 21.68)}{100} $<br /><br />2. Calculate Weighted Average for Omg<br /> $ \text{Average Mass of Omg} = \frac{(419.979962 \times 20.05) + (424.001321 \times 39.21) + (424.998356 \times 40.74)}{100} $<br /><br />3. Calculate Weighted Average for Sa<br /> $ \text{Average Mass of Sa} = \frac{(291.020389 \times 20.01) + (292.987681 \times 28.71) + (295.011006 \times 51.28)}{100} $<br /><br />4. Calculate Weighted Average for Bg<br /> $ \text{Average Mass of Bg} = \frac{(399.979962 \times 29.21) + (404.001321 \times 40.05) + (405.998356 \times 30.74)}{100} $<br /><br />5. Calculate Weighted Average for Lp<br /> $ \text{Average Mass of Lp} = \frac{372.000809 \times 51.28}{100} $
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