r/chemistryhomework

8K archived posts · Mar 2012 – Sep 2026

Get help with your chemistry homework.

r/chemistryhomework

A place to come and get assistance with chemistry homework.

Created Jan 25, 2012

6.8KMembers (last snapshot)

8KArchived posts

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: 6.02214x10^23
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: 2.9979x10^8 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.

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