/r/chemhelp

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How do i wash a sample?

2 upvotes • Famous-Cause-3128

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What the hell is this?

2 upvotes • Worsaae

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can i use 99.9 isopropyl alcohol after expiration ? if not where do i dispose of it if there are not waste disposal places near me?

2 upvotes • IX7L

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Is this hypothetical H-NMR accurate?

2 upvotes • Practical-Biscotti59

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Does this make any sense at all? It goes over 100% so how is there even an answer. I only got the answer from ChatGPT so idrk

2 upvotes • KlayThomps0n11

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Enthalpy of liquid mixture

2 upvotes • Even_Youth8514

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Free energy and phase change temp when not at 1atm? (Or bar)

2 upvotes • Nudebovine1

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Resource Request for Chemistry Quizzes with Instant Feedback

2 upvotes • Annual-Dirt2513

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Chemistry Acid-Base Titration Problems

2 upvotes • Popular-Product-1874

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crystallization of iron sulfate (II)

2 upvotes • Arno493

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
How do i wash a sample?	2	Famous-Cause-3128
What the hell is this?	2	Worsaae
can i use 99.9 isopropyl alcohol after expiration ? if not where do i dispose of it if there are not waste disposal places near me?	2	IX7L
Is this hypothetical H-NMR accurate?	2	Practical-Biscotti59
Does this make any sense at all? It goes over 100% so how is there even an answer. I only got the answer from ChatGPT so idrk	2	KlayThomps0n11
Enthalpy of liquid mixture	2	Even_Youth8514
Free energy and phase change temp when not at 1atm? (Or bar)	2	Nudebovine1
Resource Request for Chemistry Quizzes with Instant Feedback	2	Annual-Dirt2513
Chemistry Acid-Base Titration Problems	2	Popular-Product-1874
crystallization of iron sulfate (II)	2	Arno493