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Biology and Chemistry Homework Help Forum

Free Biology, Chemistry, Geology homework help via qualified mentors. Please use the template when requesting help and show your work. Gain understanding today!

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What Does 2-Butanol Form with Trifluoroacetic Anhydride?

Jan 29, 2010 · Replies 1 · Jan 19, 2017

Replies: 1

Views: 3K

What are the key steps to analyzing an NMR spectrum?

Feb 27, 2010 · Replies 1 · Jan 19, 2017

Replies: 1

Views: 4K

Mechanism for reaction of Grignard reagent

Jul 14, 2010 · Replies 1 · Jan 19, 2017

Replies: 1

Views: 7K

C13 NMR Interpretation Homework - C,H,O 116g/mol

Dec 2, 2010 · Replies 1 · Jan 19, 2017

Replies: 1

Views: 4K

What does it mean for a system to be 'Self-regulated'?

Jan 18, 2017 · Replies 2 · Jan 19, 2017

Replies: 2

Views: 1K

Predict the sign for delta Ssys CH3CH2CH3(g) +5O2(g)-> 3CO2(g) + 4H2

Oct 10, 2013 · Replies 1 · Jan 19, 2017

Replies: 1

Views: 4K

Help please with this precipitation exercise

Jan 17, 2017 · Replies 4 · Jan 17, 2017

Replies: 4

Views: 2K

Molar Mass of a Mixture: Calculating with nN2, nO2, and p=nRT/V

Jan 15, 2017 · Replies 12 · Jan 16, 2017

Replies: 12

Views: 17K

[Equilibrium] Max of A in Saturated Solution B

Jan 15, 2017 · Replies 1 · Jan 16, 2017

Replies: 1

Views: 2K

What Was the Original Mole Percentage of O2 and H2 in the Mixture?

Jan 15, 2017 · Replies 2 · Jan 15, 2017

Replies: 2

Views: 2K

How Do You Propose a Reaction Mechanism for a Multi-Step Reaction?

Dec 13, 2016 · Replies 10 · Jan 11, 2017

Replies: 10

Views: 5K

Constructing a balanced equation for KClO3+H2SO4

Jan 4, 2017 · Replies 6 · Jan 6, 2017

Replies: 6

Views: 5K

What is the Correct Molar Solubility for Barium Chromate and Silver Phosphate?

Aug 6, 2013 · Replies 4 · Jan 5, 2017

Replies: 4

Views: 12K

How to write equations for salt dissolving in water/ionizing

Jan 2, 2017 · Replies 1 · Jan 3, 2017

Replies: 1

Views: 4K

X-ray crystallography; intensity peaks vary with voltage

Jan 1, 2017 · Replies 2 · Jan 1, 2017

Replies: 2

Views: 2K

with "Triprotic Acid Titration" Question

Dec 22, 2016 · Replies 4 · Dec 24, 2016

Replies: 4

Views: 4K

Acid-Base Equilib: Solving Homework Problem

Dec 20, 2016 · Replies 6 · Dec 21, 2016

Replies: 6

Views: 2K

Why Is Para Nitro Phenol More Acidic Than Ortho Nitro Phenol?

Dec 14, 2016 · Replies 5 · Dec 20, 2016

Replies: 5

Views: 3K

What Happens to Copper (II) Chloride Solution Under Different Conditions?

Dec 16, 2016 · Replies 3 · Dec 17, 2016

Replies: 3

Views: 5K

How Does Adding KSCN Affect Fe3+, SCN-, and FeSCN2+ Concentrations?

Dec 15, 2016 · Replies 2 · Dec 16, 2016

Replies: 2

Views: 3K

What are the units for Ksp and why are they not always included in calculations?

Dec 15, 2016 · Replies 1 · Dec 16, 2016

Replies: 1

Views: 12K

Need help creating flowchart for ID-ing microogranism

Dec 15, 2016 · Replies 1 · Dec 15, 2016

Replies: 1

Views: 2K

Weak bases react with water to produce strong base?

Dec 13, 2016 · Replies 6 · Dec 15, 2016

Replies: 6

Views: 2K

Effect of an Inert Gas on Equilibrium

Dec 14, 2016 · Replies 1 · Dec 15, 2016

Replies: 1

Views: 2K

Is it the metal in my above balanced equation ?

Dec 13, 2016 · Replies 4 · Dec 14, 2016

Replies: 4

Views: 2K

Solving a pH Change After Adding Sulfuric Acid to Sodium Hydroxide

Dec 10, 2016 · Replies 12 · Dec 13, 2016

Replies: 12

Views: 5K

What is the basicity of carbon: primary, secondary, tertiary

Dec 12, 2016 · Replies 1 · Dec 13, 2016

Replies: 1

Views: 2K

Determine Enthelpy, Entropy, and Chemical Potential

Dec 12, 2016 · Replies 4 · Dec 12, 2016

Replies: 4

Views: 2K

Calculating the Ksp of Calcium hydroxide at room temp

Dec 10, 2016 · Replies 5 · Dec 10, 2016

Replies: 5

Views: 5K

Stoichiometry: confused about the question

Jan 13, 2010 · Replies 4 · Dec 9, 2016

Replies: 4

Views: 3K

Diazomethane Resonance: Lewis Structure Soln

Dec 9, 2016 · Replies 3 · Dec 9, 2016

Replies: 3

Views: 5K

Quick pH calculation - Please verify

May 14, 2014 · Replies 2 · Dec 9, 2016

Replies: 2

Views: 4K

Preparing NaOH Reagent: Diluting 0.32M Solution with Water

Dec 8, 2016 · Replies 1 · Dec 8, 2016

Replies: 1

Views: 2K

Preparation of standard stock solution

Dec 1, 2016 · Replies 5 · Dec 8, 2016

Replies: 5

Views: 3K

Electro chem, basic concept problem

Jun 3, 2009 · Replies 1 · Dec 7, 2016

Replies: 1

Views: 3K

Reaction of NaOH & Zn vs Zn & HCl: Physical & Chemical Changes

Mar 26, 2007 · Replies 1 · Dec 7, 2016

Replies: 1

Views: 3K

Solve Galvanic Cell Problem: Iron Oxidation

Dec 5, 2016 · Replies 3 · Dec 5, 2016

Replies: 3

Views: 2K

Equilibrium pressure of calcium carbonate

Dec 4, 2016 · Replies 3 · Dec 5, 2016

Replies: 3

Views: 3K

How Much Cl2, C, and TiCl4 Are Produced from 1.25 mol TiO2?

Jan 6, 2011 · Replies 1 · Dec 4, 2016

Replies: 1

Views: 4K

Please check my work energy required to raise temp by 10degthanks

Feb 20, 2011 · Replies 1 · Dec 4, 2016

Replies: 1

Views: 4K

Need an explanation -- Consider pure water separated from....

Dec 3, 2016 · Replies 4 · Dec 3, 2016

Replies: 4

Views: 2K

Chemistry True statements about the above molecule ?(AM I CORRECT?) ~ Chemistry

Oct 4, 2009 · Replies 1 · Dec 3, 2016

Replies: 1

Views: 6K

Chirality Questions - Need Answers Checked

Oct 31, 2006 · Replies 1 · Dec 2, 2016

Replies: 1

Views: 5K

What is the [A2+] at Equilibrium When Mixed with B-?

Nov 29, 2016 · Replies 5 · Dec 1, 2016

Replies: 5

Views: 3K

Calculate ΔHo for the chemical reaction:

Nov 30, 2016 · Replies 2 · Dec 1, 2016

Replies: 2

Views: 4K

Equilibrium Calculation for Fe3O4-CO Reaction at 600°C and 5.00 atm

Nov 28, 2016 · Replies 1 · Nov 28, 2016

Replies: 1

Views: 2K

How would I find the volume of the solution?

Nov 26, 2016 · Replies 4 · Nov 28, 2016

Replies: 4

Views: 2K

Chemistry Moles Ratio: Calculate Heat Generated by N2 & H2

Nov 19, 2009 · Replies 1 · Nov 26, 2016

Replies: 1

Views: 5K

Why should a distilling flask not be more than half filled?

Jan 2, 2010 · Replies 1 · Nov 26, 2016

Replies: 1

Views: 13K

Calculating the Freezing Point of Mercury Under Pressure

Oct 10, 2009 · Replies 1 · Nov 26, 2016

Replies: 1

Views: 9K

Chemistry Boiling Points and Intermolecular Forces

Oct 11, 2009 · Replies 1 · Nov 26, 2016

Replies: 1

Views: 3K

Diffusion lab semipermeable membrane help

Oct 30, 2008 · Replies 1 · Nov 26, 2016

Replies: 1

Views: 4K

CHEM: Triple point Temp and Pressure

Nov 17, 2008 · Replies 1 · Nov 26, 2016

Replies: 1

Views: 5K

Impact of Temperature on Fuel Cell Work Output

Feb 13, 2009 · Replies 1 · Nov 24, 2016

Replies: 1

Views: 4K

Understanding the Law of Conservation of Mass: Mathematical and Verbal Proofs

Sep 7, 2008 · Replies 1 · Nov 24, 2016

Replies: 1

Views: 3K

Reaction Mechanism (Shouldn't Be Too Difficult)

Mar 29, 2008 · Replies 1 · Nov 24, 2016

Replies: 1

Views: 3K

How Do You Calculate the Final Concentration in a Series of Dilutions?

Sep 4, 2007 · Replies 1 · Nov 23, 2016

Replies: 1

Views: 10K

Is Increased Chloroplast Concentration Always Beneficial for Photosynthesis?

Mar 16, 2006 · Replies 1 · Nov 23, 2016

Replies: 1

Views: 3K

Ksp and Q precipitate, Why does volume of water matter

Nov 19, 2016 · Replies 4 · Nov 22, 2016

Replies: 4

Views: 3K

Methane mixed with air at 16:1 by mass

Nov 21, 2016 · Replies 4 · Nov 22, 2016

Replies: 4

Views: 2K

Interpreting gram stain results...unknown organism

Nov 22, 2016 · Replies 5 · Nov 22, 2016

Replies: 5

Views: 2K

Calculating Mass Flux and Mass Fractions in CO2 and H2 Injection Experiment

Nov 19, 2016 · Replies 3 · Nov 20, 2016

Replies: 3

Views: 2K

Energy Change Nuclear Chemistry

Nov 19, 2016 · Replies 7 · Nov 19, 2016

Replies: 7

Views: 2K

Hydrogen compounds and states of matter

May 6, 2007 · Replies 1 · Nov 18, 2016

Replies: 1

Views: 6K

Which Statements Are True for the Given Thermochemical Equation?

Jan 25, 2007 · Replies 1 · Nov 18, 2016

Replies: 1

Views: 6K

Chemistry Lab Homework: Reaction Rates & Concentration Calculation

Nov 17, 2016 · Replies 1 · Nov 17, 2016

Replies: 1

Views: 1K

Organic Chem Nomenclature (need an expert)

Nov 11, 2016 · Replies 1 · Nov 16, 2016

Replies: 1

Views: 1K

How to solve restriction mapping problems?

Nov 16, 2016 · Replies 3 · Nov 16, 2016

Replies: 3

Views: 5K

Calculating exerted pressure ( gas law lab)

Nov 15, 2016 · Replies 3 · Nov 16, 2016

Replies: 3

Views: 2K

Given ∆Hf = -607 kJ/mol and S = 417 J, find ∆H and ∆S

Nov 15, 2016 · Replies 6 · Nov 15, 2016

Replies: 6

Views: 2K

Decomposition of N2O5: Reaction Mechanisms and Intermediate Concentrations

Nov 11, 2016 · Replies 1 · Nov 14, 2016

Replies: 1

Views: 5K

Finding a rock porosity change after an acid mix treatment

Nov 10, 2016 · Replies 1 · Nov 14, 2016

Replies: 1

Views: 2K

Why there are infinite ways to balance this Redox equation?

Nov 12, 2016 · Replies 8 · Nov 13, 2016

Replies: 8

Views: 2K

How to Calculate the Molar Heat of NH4Cl Solution?

Mar 2, 2006 · Replies 2 · Nov 12, 2016

Replies: 2

Views: 14K

Can't find this exact reaction mechanism online -- Help please....

Nov 8, 2016 · Replies 4 · Nov 11, 2016

Replies: 4

Views: 2K

Mixture Composition Calculation for Combustion of Methane and Propane

Nov 13, 2006 · Replies 1 · Nov 10, 2016

Replies: 1

Views: 3K

Calculate Heat of Combustion of Graphite

Nov 9, 2016 · Replies 7 · Nov 10, 2016

Replies: 7

Views: 2K

Sources of errors on Determinating Faraday's Constant experiment

Apr 20, 2006 · Replies 1 · Nov 9, 2016

Replies: 1

Views: 30K

The Enchanted Cardboard Experiment

Feb 22, 2006 · Replies 1 · Nov 9, 2016

Replies: 1

Views: 6K

Inorganic Chemistry Help: Solubility Transformation and Equilibrium Constants

Nov 13, 2005 · Replies 1 · Nov 9, 2016

Replies: 1

Views: 4K

Calculating Volume in dm³: Solving the Equation 2KClO3 -----> 2KCl + 3O2

Nov 8, 2016 · Replies 6 · Nov 8, 2016

Replies: 6

Views: 2K

What's the correct answer here? (petroleum cracking)

Nov 6, 2016 · Replies 13 · Nov 7, 2016

Replies: 13

Views: 3K

Chemistry Calculate mass of compound given the mole % of total solution

Nov 6, 2016 · Replies 3 · Nov 7, 2016

Replies: 3

Views: 3K

Find Mass Fractions of Benzene in Liquid and Vapour

Nov 2, 2016 · Replies 3 · Nov 3, 2016

Replies: 3

Views: 2K

Chemistry Chemistry: Molecular Iodine and Atomic Iodine

Oct 31, 2016 · Replies 1 · Oct 31, 2016

Replies: 1

Views: 2K

Normally, water is a liquid but hydrogen sulphide a gas. Why?

Oct 27, 2016 · Replies 9 · Oct 31, 2016

Replies: 9

Views: 3K

Max Aphelion Distance of Kuiper Belt Comet w/216 yr Orbital Period

Oct 23, 2016 · Replies 11 · Oct 29, 2016

Replies: 11

Views: 4K

How Do You Determine the Electron Configuration for Cd2+?

Oct 26, 2016 · Replies 2 · Oct 26, 2016

Replies: 2

Views: 3K

Solubility of tartaric acid/sodium tartrate in high vs low pH

Oct 24, 2016 · Replies 5 · Oct 24, 2016

Replies: 5

Views: 3K

Oxidation - Reduction with copper and zinc

Nov 5, 2006 · Replies 1 · Oct 24, 2016

Replies: 1

Views: 10K

CV (cardiovascular) system and MRI related queries

Oct 24, 2016 · Replies 3 · Oct 24, 2016

Replies: 3

Views: 2K

How Does Temperature Affect Pressure in a Gas Reaction?

Sep 24, 2006 · Replies 2 · Oct 24, 2016

Replies: 2

Views: 5K

What is the correct procedure for calculating energy change to form KI(s)?

Oct 14, 2006 · Replies 1 · Oct 23, 2016

Replies: 1

Views: 5K

Empirical formula / checking an answer

Oct 4, 2006 · Replies 1 · Oct 23, 2016

Replies: 1

Views: 4K

Neutralisation Cont'd: Heat of Neutralization & Final Temperature

Jun 20, 2006 · Replies 1 · Oct 23, 2016

Replies: 1

Views: 3K

Esters' high boiling point

Oct 22, 2016 · Replies 6 · Oct 22, 2016

Replies: 6

Views: 4K

Orbitals S P D F: Francium & 7s Orbital

Oct 20, 2016 · Replies 5 · Oct 21, 2016

Replies: 5

Views: 2K

Can a reaction be neither exo- nor endothermic?

Oct 19, 2016 · Replies 11 · Oct 20, 2016

Replies: 11

Views: 4K

Two pH questions i don't understand

Oct 19, 2016 · Replies 5 · Oct 20, 2016

Replies: 5

Views: 4K

How to prepare 50mM Na2HPO4/H3PO4 buffer, pH 4.5

Oct 17, 2016 · Replies 3 · Oct 17, 2016

Replies: 3

Views: 4K

Bio and Chem Homework Help

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Tutors or resources offering bio and chem homework help aim to clarify complex concepts, aid in problem-solving, and reinforce students' understanding of fundamental principles in these scientific disciplines. This support plays a crucial role in helping students succeed in their biology and chemistry coursework by providing additional explanations and guidance outside of the classroom.

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