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Nuclear Chemistry and Radiochemistry Forum / Re: Diamond vs cosmic rays
« Last post by Borek on November 27, 2023, 02:57:05 AM »For all practical purposes: never.
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Nuclear Chemistry and Radiochemistry Forum / Re: Diamond vs cosmic rays
« Last post by Hunter2 on November 25, 2023, 02:59:51 AM »No,
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Undergraduate General Chemistry Forum / Re: Common Ion Effect Solubility
« Last post by mjc123 on November 24, 2023, 04:24:53 PM »It's my answer. But try to get into the habit of always using units - the answer is 9 x 10-5 M. Actually, to 2 s.f. it's 9.2 x 10-5 M - don't round off prematurely.
And 9 x 10-5/0.41 = 0.021 %.
And 9 x 10-5/0.41 = 0.021 %.
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Organic Chemistry Forum for Graduate Students and Professionals / Re: gaussian TS calculation fails
« Last post by rolnor on November 24, 2023, 03:25:00 PM »Yeah me to, I have worked a little with Gaussian but this is a extremely specifik question so... I am sure you can find a forum for that software
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Nuclear Chemistry and Radiochemistry Forum / Diamond vs cosmic rays
« Last post by pnacze199204 on November 24, 2023, 02:28:54 PM »How quickly would 1 carat of diamond in space exposed to cosmic radiation be destroyed?
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Organic Chemistry Forum / MO Theory on Youtube
« Last post by rolnor on November 24, 2023, 06:20:00 AM »This was nice. The explanation for oxygen being a bit blue and also magnetic is important. Also why nobel gases are relatively non-reactive.
https://youtu.be/oWzuqLl6Ito?si=OoFmz4w3tivmJMVD
https://youtu.be/oWzuqLl6Ito?si=OoFmz4w3tivmJMVD
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Undergraduate General Chemistry Forum / Re: Common Ion Effect Solubility
« Last post by MilkyCar on November 23, 2023, 08:30:14 PM »Right, so I divided both sides by 2 after that and I got 9.0 x 10^-5 and then checked once again afterward, in which I got 0.021, which is still way less than 5 percent.
This must be the actual correct answer, right?
This must be the actual correct answer, right?
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Undergraduate General Chemistry Forum / Re: Common Ion Effect Solubility
« Last post by mjc123 on November 23, 2023, 05:30:46 PM »That's 0.043 percent, which is way less than 5%, so assumption is justified.
But wait - look at your calculation - 1.8 x 10-4 = 2x
Be careful. It's a shame to take trouble getting the hard part right, only to lose marks by careless errors in what should be easy.
But wait - look at your calculation - 1.8 x 10-4 = 2x
Be careful. It's a shame to take trouble getting the hard part right, only to lose marks by careless errors in what should be easy.
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Undergraduate General Chemistry Forum / Re: Common Ion Effect Solubility
« Last post by MilkyCar on November 23, 2023, 10:23:36 AM »Alright, I did 1.8 x 10^-4/0.41 x 100 = 0.043 which is less than 5 percent. Correct assumption?
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Undergraduate General Chemistry Forum / Re: Common Ion Effect Solubility
« Last post by Borek on November 23, 2023, 03:10:56 AM »And afterwards, I did 1.4x10^-8/0.41 in which I got 3.4 x 10^-8. And then, I square-rooted that to get 1.8 x 10^-4. Is this correct?
Close, but as mjc123 wrote: you should check validity of the assumption made.
