If you have a problem set due and you are thinking “can someone do my chemistry homework,” here is how it works on HomeworkDoer: post the assignment, compare bids from qualified chemistry tutors, and choose the one who will deliver a worked solution you can check line by line.
Chemistry homework help on HomeworkDoer covers high school and AP chemistry, general chemistry, organic, analytical, physical and biochemistry, plus lab reports and online homework. You set the deadline and a budget range, tutors reply with a price and a message, and you pay only for the bid you accept.
Good chemistry homework answers show more than a final number. They balance the equation, convert units step by step, keep significant figures, and explain why a reaction happens, so you can learn the method and handle the next problem yourself. See how HomeworkDoer works for the full process.
What We Can Help With: Chemistry Topics, Courses and Platforms
Chemistry help on HomeworkDoer runs from a first high school course to upper-level university chemistry.
Topics and Courses
- General chemistry: measurement and significant figures, the mole, stoichiometry, limiting reagents, solutions and molarity, gas laws, thermochemistry and Hess’s law.
- Atomic structure and bonding: electron configurations, periodic trends, Lewis structures, VSEPR shapes, hybridization and intermolecular forces.
- Equilibrium and kinetics: rate laws, reaction mechanisms, equilibrium constants, Le Chatelier’s principle, acids and bases, pH, buffers and titrations.
- Organic chemistry: nomenclature, stereochemistry, reaction mechanisms, substitution and elimination, synthesis problems and spectroscopy (IR, NMR and mass spectrometry).
- Analytical chemistry: calibration curves, titration analysis, spectrophotometry, error analysis and statistics for lab data.
- Physical chemistry and biochemistry: thermodynamics, kinetics, quantum chemistry basics, enzymes, metabolism and macromolecules.
- Electrochemistry and nuclear chemistry: redox balancing, galvanic and electrolytic cells, cell potentials, half-life and decay.
Platforms and Deliverables
- Online homework: ALEKS, Mastering Chemistry, OWL, Sapling and WebAssign, with worked steps so you can enter your own answers.
- Lab reports: data tables, calculations, graphs, error analysis and conclusions in the format your lab manual asks for.
- Written work: short answers, mechanism explanations, synthesis plans and study guides for exams.
A Worked Example: Limiting Reagent and Percent Yield
Limiting-reagent problems appear in every general chemistry course, and they combine every skill stoichiometry needs: a balanced equation, molar masses, mole ratios and unit conversions. Here is the solution as a tutor would write it.
Problem. 25.0 g of aluminum reacts with 40.0 g of chlorine gas: 2 Al + 3 Cl₂ → 2 AlCl₃. Which reactant is limiting? What is the theoretical yield of aluminum chloride, and what is the percent yield if 45.0 g of AlCl₃ is collected? How much of the excess reactant is left?
- Check that the equation is balanced. There are 2 Al and 6 Cl atoms on each side, so the mole ratio is 2 Al : 3 Cl₂ : 2 AlCl₃.
- Find the molar masses. Al = 26.98 g/mol, Cl₂ = 2 × 35.45 = 70.90 g/mol, and AlCl₃ = 26.98 + 3 × 35.45 = 133.33 g/mol.
- Convert each mass to moles. Al: 25.0 g ÷ 26.98 g/mol = 0.9266 mol. Cl₂: 40.0 g ÷ 70.90 g/mol = 0.5642 mol.
- Compare with the mole ratio. To use all 0.9266 mol of Al you would need 0.9266 × 3/2 = 1.390 mol of Cl₂. Only 0.5642 mol is available, so chlorine is the limiting reagent and aluminum is in excess.
- Calculate the theoretical yield from the limiting reagent. 0.5642 mol Cl₂ × (2 mol AlCl₃ ÷ 3 mol Cl₂) = 0.3761 mol AlCl₃. Then 0.3761 mol × 133.33 g/mol = 50.1 g of AlCl₃.
- Calculate the percent yield. Percent yield = actual ÷ theoretical × 100 = 45.0 g ÷ 50.15 g × 100 = 89.7%.
- Find the excess aluminum left over. The reaction uses 0.3761 mol of Al (the ratio of Al to AlCl₃ is 1 : 1), which is 0.3761 × 26.98 = 10.15 g. So 25.0 − 10.15 = 14.8 g of Al remains.
Two habits make problems like this reliable. First, always compare reactants in moles, never in grams: here aluminum has the smaller mass but is still in excess. Second, carry an extra digit through intermediate steps and round only at the end, so a 50.15 g theoretical yield does not drift to a wrong percent yield.
The atomic weights above are the standard values used in most textbooks; the official values are published by the IUPAC Commission on Isotopic Abundances and Atomic Weights. For more practice, the OpenStax Chemistry 2e section on reaction stoichiometry and the section on reaction yields cover the same method with worked examples.
Do My Chemistry Homework: How It Works
- Post the assignment. Upload the problem set, the lab handout or screenshots of the online questions, plus your rubric. Choose the subject, academic level, deadline and a budget range, and mention your textbook and the periodic table values your course uses.
- Compare bids from chemistry tutors. Qualified tutors send a price and a message. Check each tutor’s profile, rating and reviews, and chat with them about their approach before you choose.
- Pay and track progress. Pay for the bid you accept at checkout, then follow progress and message your tutor from your dashboard if you have extra data or questions.
- Review the solution. The tutor delivers through your dashboard. Check the balanced equations, units and significant figures against your instructions, and request a revision if anything is missing.
- Study it and keep it. Download the files and work through each step. If a revision does not fix a problem, you can open a dispute, and support is available by live chat.
Pricing: What It Costs to Pay Someone to Do My Chemistry Homework
There is no fixed price list. When you post, you pick a budget range: $20–30, $30–60, $60–100, $100–150, $150–250, $250–450, $450–700, $700–1,000 or $1,000–2,000. Tutors bid with their own price, so you see real quotes first and pay only for the bid you accept. These factors move the price most:
- Length: ten molarity questions take less time than a full organic synthesis problem set.
- Level: physical chemistry and multi-step organic mechanisms need deeper expertise than an introductory course.
- Deadline: a 12-hour turnaround narrows the pool of available tutors and usually costs more than a one-week deadline.
- Write-up: answers alone take less time than full worked solutions, and a formal lab report with error analysis takes longer still.
- Drawings: mechanisms, Lewis structures and spectra interpretation take time to draw and explain clearly.
Posting early with the full question text and your class notes attached tends to bring more bids and more choice on price.
Why a Chemistry Expert Instead of an AI Answer
AI tools produce confident-looking chemistry answers in seconds, but chemistry is full of small details that decide whether an answer is right. A tutor who knows the subject can:
- Balance and check every equation. An unbalanced equation or a wrong charge in a half-reaction makes every number after it wrong.
- Draw mechanisms correctly. Curved arrows must start from electrons and end at the atom that accepts them. Text-only tools often skip or misplace them.
- Handle units and significant figures. Millimoles versus moles, milliliters versus liters, and rounding too early are the most common reasons online chemistry answers are marked wrong.
- Match your course. Tutors use the notation, constants and methods your textbook and instructor expect, such as ICE tables for equilibrium or the specific naming rules your course follows.
- Explain and stand behind the work. You can ask follow-up questions in chat, and the tutor revises the work if it misses your instructions.
General Chemistry Homework Help
General chemistry is a two-semester sequence at most colleges, and the second semester builds directly on the first. If moles and stoichiometry are shaky, equilibrium and acid-base problems become much harder. A tutor can work through your assignment and point out exactly where a method breaks down.
- Stoichiometry and solutions: mole conversions, limiting reagents, percent yield, molarity, dilutions and solution stoichiometry.
- Gases and thermochemistry: the ideal gas law, partial pressures, calorimetry, enthalpy and Hess’s law.
- Equilibrium and acids and bases: ICE tables, Ka and Kb, pH of weak acids and buffers, and titration curves.
- Kinetics and thermodynamics: rate laws from data, half-life, entropy, Gibbs free energy and spontaneity.
Many of these problems rely on algebra and logarithms, and some use calculus in later courses. If the math is the sticking point, our math homework help covers the algebra and calculus behind it.
Organic Chemistry Homework Help
Organic chemistry is often the course that decides pre-med and science plans, because it asks you to think in three dimensions and predict reactions rather than memorize them. Tutors explain the reasoning behind each step, not just the product.
- Structure and naming: IUPAC nomenclature, functional groups, resonance and acidity.
- Stereochemistry: chirality, R and S configurations, enantiomers, diastereomers and Fischer projections.
- Mechanisms: SN1, SN2, E1 and E2 reactions, additions to alkenes, carbonyl chemistry and aromatic substitution, with every curved arrow drawn.
- Synthesis and spectroscopy: multi-step synthesis plans and structure determination from IR, NMR and mass spectra.
For a deeper look at the course itself, read our guide to organic chemistry homework help. The free OpenStax Organic Chemistry textbook is also a solid reference for reviewing the reactions your course covers.
Chemistry Lab Reports
Lab reports are graded on analysis as much as on results. A strong chemistry lab report states the purpose, summarizes the procedure, presents data in labeled tables, shows sample calculations, compares the result with the expected value using percent error, and discusses sources of error honestly. Tutors can help you organize your own data into that structure, check the calculations and explain what your results mean.
AP Chemistry and Online Chemistry Homework
AP Chemistry covers the same ground as a first-year college course, and the free-response section rewards clear, justified reasoning. The College Board’s AP Chemistry course page lists the units and skills the exam tests. Tutors can work through practice problems in the exam’s style and explain what the scoring guidelines look for.
For online platforms such as ALEKS, Mastering Chemistry, OWL and Sapling, tutors work through the problems in your assignment with each step written out, so you can follow the method and enter your own answers. Many questions use randomized values, so share the exact numbers you were given. Chemistry also overlaps with physics in topics such as thermodynamics, electrochemistry and atomic structure; if your assignment crosses into forces, circuits or energy, see our physics homework help.
Analytical, Physical and Biochemistry Help
Upper-level chemistry courses lean harder on math and data, and the homework often looks more like a lab analysis than a textbook exercise. Tutors who work in these areas can help with the calculations and with explaining what the numbers mean.
- Analytical chemistry: calibration curves and linear regression, limits of detection, Beer-Lambert law calculations, titration endpoints, standard deviation and confidence intervals for replicate measurements, and propagation of error.
- Physical chemistry: the laws of thermodynamics, Gibbs free energy and equilibrium, integrated rate laws and the Arrhenius equation, phase diagrams, and introductory quantum chemistry such as particle-in-a-box energy levels.
- Biochemistry: amino acid structure and pKa values, protein folding, enzyme kinetics with Michaelis-Menten and Lineweaver-Burk plots, metabolic pathways and the chemistry of nucleic acids.
- Electrochemistry: balancing redox reactions in acid or base, standard cell potentials, the Nernst equation and electrolysis calculations.
These courses often expect a short written interpretation alongside each calculation, such as what a negative ΔG tells you about spontaneity or why a curve flattens at high substrate concentration. Ask your tutor to include those explanations, because they are usually where the remaining points on the rubric come from. If your course uses spreadsheet or Python data analysis, mention it when you post so the tutor can deliver files you can rerun.
Get Chemistry Homework Help Today
Whether you need one equilibrium problem explained or a full organic problem set worked step by step, you can post it in a few minutes. Attach the questions, your lab data or online assignment screenshots and any instructions, set your deadline and budget range, and compare bids from chemistry tutors before you pay.
Post your chemistry homework now and get worked solutions with balanced equations, clear units and the reasoning behind every step.
