Chemistry, 14.05.2021 19:10 hePandaKing3689
Fluorine-21 has a half-life of approximately 5 seconds. What fraction of the original nuclei would remain after 30 seconds?
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Chemistry, 21.06.2019 22:20
One or more substances changing into one or more substances is an example of a
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Chemistry, 22.06.2019 06:00
24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm
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Chemistry, 22.06.2019 12:30
Sodium sulfate dissolves as follows: na2so4(s) → 2na+(aq) + so42- (aq). how many moles of na2so4 are required to make 1.0 l of solution in which the na concentration is 0.10 m?
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Chemistry, 22.06.2019 13:00
Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?
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Fluorine-21 has a half-life of approximately 5 seconds. What fraction of the original nuclei would r...
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