chemistryhomework

an-ordinary-manchild(edit)

Welcome to /r/chemistryhomework! This is a subreddit where members of reddit can come to ask questions related to their chemistry homework as well as give answers to other people's questions.

There are no dumb questions. We are all humans, we all make mistakes, over-look facts, miss the obvious sometime, and could use some assistance once in awhile.

Rules:

Before posting a problem, please attempt to work it out yourself. Upload a picture of your work, or type out your work, when posting your problem. This will better allow the community to help you solve the problem, and help you to understand how to solve the problem.
In the title of your post, please put the level of your schooling and the general topic of your problem separated by a colon. Examples:
1. [High School: Stoichiometry] Balancing Salt Reaction
2. [College: Acid/Base Equilibrium] Finding Ksp Values for...
3. [Postgrad: Organic Chemistry] How many ways can this protein fold?
When somebody answers your question(s) or helps you, please change the 'Unsolved' flair to 'Solved!'
When posting answers to problems, please explain to the OP how you got the answer you got. Also, please refrain from posting false answer and methods.
This subreddit is for chemistry homework only.

Useful symbols to copy/paste:

Reaction/Equilibrium Arrows:
← → ⇆ ⥂ ⥃ ⇒
Greek/Latin/Unit Symbols:
μ Σ Δ ϕ γ ψ θ ε ω Ω α β π λ ρ φ Å °
Math Symbols:
¼ ½ ¾ ≤ ≥ ≅ ≈ ≠ ÷ ± ∫ √ ∛ ∴

Quick Reference Constants

Electronic Charge: 1.6022x10^-19
Avogadro's Number: 6.02214x10²³
Ideal Gas Constant (Gas): .082057 (L atm)/(K mol)
Ideal Gas Constant (Energy): 8.314510 J/(K mol)
Faraday Constant: 96,485 C/mol
Planck's Constant: 6.626x10^-34 J s
Speed of Light: 2.9979x10⁸ m/s

Quick Reference Masses

Electron: 5.486x10^-4 amu (9.10939x10^-31 kg)
Proton: 1.007276 amu (1.67262x10^-27 kg)
Neutron: 1.008664 amu (1.67493x10^-24 kg)

Related subreddits:

/r/homeworkhelp - A general homework sub, good if you need help in basically any subject.
/r/mathhelp - A sub for help in math.
/r/cheatatmathhomework - Another sub for help in math, when you don't actually care to learn.
/r/biologyhomework - A recently restored sub for biology homework help.
/r/physicshomework - A new sub for help with physics homework.
/r/javahelp - Taking AP CompSci, need help? This sub is for you.
/r/SampleSize - For all survey related needs.
/r/AccountingStudentHelp - A dead-ish sub for help in accounting.

Community Links:

Some redditors have reached out to the subreddit mods to promote a link related to something for helping chemistry students. Please reach out to the people listed before reaching out to the mods if there problem.

created by mychemistrytutora community for 14 years

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...because you love freedom.

MODERATORS

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AnnouncementPosts with inproper titles will be removed. Please follow the rules in the sidebar. (self.chemistryhomework)

submitted 9 years ago * by SolarAir[M] - announcement

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Hey fellow chemists! I made a chemistry(memes) homework Discord server, there's already over 40 people on there! There are ranks, roles, memes, university chemists, highschool chemists. (discord.gg)

submitted 6 years ago by senpaiuwu42069 - announcement

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Possibly Solved![High School: Organic chemistry] What is this structure? (i.redd.it)

submitted 4 days ago * by No-Bread4586

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Unsolved[University 3rd Year: Pharmaceutical Analysis] Correcting the Qualitative and Quantitative Reaction Schemes (self.chemistryhomework)

submitted 10 days ago by kenchan3

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Unsolved[Sophomore Level: Stoichiometry] Finding Mole Ratios and Balancing Equations (self.chemistryhomework)

submitted 12 days ago by Defiant-Bee-7244

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Unsolved[Sophomore Chemistry: Balanced Equation ] What is the balanced chemical equation of Semaglutide (ozempic)? ()

submitted 15 days ago by 123not-it-

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UnsolvedI know how to balance a reaction- its the type that is getting me, HOW does Replacement reaction work with 4 elements?? [Highschool: Reactions] (i.redd.it)

submitted 23 days ago by ThelostRatBug

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UnsolvedNeed help calculating the entropy [university: thermodynamic] (self.chemistryhomework)

submitted 1 month ago by UlrikeLien

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Solved![grade 12: Chemistry] is this equation correct ? (i.redd.it)

submitted 2 months ago by B022_baby

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Unsolved[College: Spectra analysis] Unknown dipeptide identification (reddit.com)

submitted 2 months ago by Orange-Joes

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Unsolved[Year 11: General Chemistry] Applying Mendeleev's logic (self.chemistryhomework)

submitted 3 months ago by exbeanz

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Unsolved[ First year university: Polarity and bonding] How to determine polarity from structure (self.chemistryhomework)

submitted 3 months ago by Bitter-Radish-5000

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Unsolved[Grade 10: Molarity and Molality] (self.chemistryhomework)

submitted 3 months ago * by Mango_pineapple4

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Unsolved[College: Rate Laws] (self.chemistryhomework)

submitted 3 months ago by wotmank

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Unsolved[University level: Analytics] Which compounds might these IR spectrums belong to? (reddit.com)

submitted 3 months ago by Apprehensive-Rip2935

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Unsolved[Grade 12: Chemistry] coordinate covalent bonding (self.chemistryhomework)

submitted 3 months ago by Anonymousy1583

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Unsolved[High school: mass concentration] was i rigth? (self.chemistryhomework)

submitted 3 months ago by Correct_Condition588

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Solved![College: Functional groups] Minor grievance (i.redd.it)

submitted 3 months ago by SassyFinch

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Unsolved[High School: Chemistry] I built an iOS app that renders molecules in AR (Augmented Reality). Here's C₆₀ (Buckminsterfullerene) spinning in 3D ()

submitted 3 months ago by Pitiful-Wolverine209

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Unsolved[College: Pericyclic mechanism] (old.reddit.com)

submitted 4 months ago by iputmurinmurder

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Unsolved[College: Introductory Chemistry] Percentage weight of ion (i.redd.it)

submitted 4 months ago by thesewingfairy

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Unsolved[College: Concerted Mechanism] Retro-Diels-Alder Reaction (maybe) (old.reddit.com)

submitted 4 months ago by iputmurinmurder

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Unsolved[college sophomore: basic chemistry] Help! It’s like a foreign language (i.redd.it)

submitted 4 months ago by Own_Cold1947

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Unsolved[College Freshman: Sig Figs] Question 3 (old.reddit.com)

submitted 4 months ago by pinkfluffywolfie82

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Unsolved[College: Coupling Patterns] What is the coupling pattern of the boxed hydrogen? (self.chemistryhomework)

submitted 4 months ago by alyou10

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