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Chemistry, 25.01.2022 02:30 rainbowdashgirl68
How much of a 500g sample of potassium-42 is left after 37.2 hours if the half-life of potassium-42 is 12.4 hours.
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Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?
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You have a sample of a metal, the sample is exactly 6.02 x 1023atom, if the sample has a mass 55.85 what metal is your sample made of?
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How much of a 500g sample of potassium-42 is left after
37.2 hours if the half-life of potassium-4...
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