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by BlastRoom
Practice calculating average atomic mass from isotope masses and abundances.
#chemistry
18 questions
One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
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Use the isotope table for boron. What average atomic mass should be reported?
The table shows chlorine's isotope data. Which average atomic mass follows from it?
A periodic-table value is a weighted average, not a simple mean. Use the magnesium table. Which value do you get?
Use the silicon isotope table. What is silicon's average atomic mass?
For neon, use the table to calculate the weighted average atomic mass.
Use lithium's isotope table to find the average atomic mass.
Gallium's isotopes are listed in the table. What weighted average atomic mass results?
Use the silver isotope table. Which average atomic mass is correct?
Use the copper isotope table. What average atomic mass do the isotope masses and abundances give?
A sample of carbon contains carbon-12 (12.00 amu, 98.9%) and carbon-13 (13.00 amu, 1.1%). What is the average atomic mass?
Potassium has potassium-39 (38.96 amu, 93.3%), potassium-40 (39.96 amu, 0.01%), and potassium-41 (40.96 amu, 6.69%). What average atomic mass results?
Zinc is zinc-64 (63.93 amu, 48.6%), zinc-66 (65.93 amu, 27.9%), zinc-67 (66.93 amu, 4.1%), zinc-68 (67.92 amu, 18.8%), and zinc-70 (69.93 amu, 0.6%). What is its average atomic mass?
Argon has argon-36 (35.97 amu, 0.34%), argon-38 (37.96 amu, 0.06%), and argon-40 (39.96 amu, 99.60%). What is the average atomic mass?
Sulfur has sulfur-32 (31.97 amu, 94.9%), sulfur-33 (32.97 amu, 0.8%), and sulfur-34 (33.97 amu, 4.3%). What is sulfur's average atomic mass?
Chromium has chromium-50 (49.95 amu, 4.3%), chromium-52 (51.94 amu, 83.8%), chromium-53 (52.94 amu, 9.5%), and chromium-54 (53.94 amu, 2.4%). What average atomic mass results?
Bromine has bromine-79 (78.92 amu) and bromine-81 (80.92 amu). Its average atomic mass is 79.90 amu. Which isotope is slightly more abundant?
Rubidium has rubidium-85 (84.91 amu) and rubidium-87 (86.91 amu). Its average atomic mass is 85.47 amu. Which statement fits the data?
Indium has indium-113 (112.90 amu) and indium-115 (114.90 amu). Its average atomic mass is 114.82 amu. What does this tell you about abundance?
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The Experiments: Cathode Ray, Gold Foil and Oil Drop
15 questions
