Chemistry, 05.05.2020 11:16 shanicar33500
Actinium-226 has a half-life of 29 hours. If 100 mg of Ac-226 disintegrates over a period of 58 hours, how many mg of actinium-226 will remain?
Answers: 1
Chemistry, 22.06.2019 04:00, tifftifftiff5069
You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present
Answers: 1
Chemistry, 22.06.2019 06:00, giusto1894
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
Answers: 2
Chemistry, 22.06.2019 17:00, brandiwingard
What is the mass of phosphorous in a 51-kg person
Answers: 1
Actinium-226 has a half-life of 29 hours. If 100 mg of Ac-226 disintegrates over a period of 58 hour...
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