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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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Net Ionic Equations: Write Formulas & Predict Products

Nov 6, 2005 · Replies 4 · Nov 6, 2005

Replies: 4

Views: 85K

4Cu + O2 --> What is the name of the compound ?

Nov 6, 2005 · Replies 3 · Nov 6, 2005

Replies: 3

Views: 3K

Classifying Amphoteric Oxides - Li_2O, BeO, P_4O_6, Cl_2O, etc.

Nov 5, 2005 · Replies 5 · Nov 6, 2005

Replies: 5

Views: 71K

Why does Benedict's test require heat for accurate results?

Nov 6, 2005 · Replies 1 · Nov 6, 2005

Replies: 1

Views: 16K

What Are the Solutions to These Chemistry Problems?

Nov 6, 2005 · Replies 1 · Nov 6, 2005

Replies: 1

Views: 3K

What Does the -ic Suffix Indicate in Chemistry?

Nov 5, 2005 · Replies 2 · Nov 5, 2005

Replies: 2

Views: 13K

Gas Laws Corrections: Calculating Volume & Molar Mass

Nov 4, 2005 · Replies 3 · Nov 5, 2005

Replies: 3

Views: 3K

Electron Config: Same for O, Ne, Mg (2+); Ni, Zn (2+); Hg, Tl+, Pb (2+)

Nov 5, 2005 · Replies 1 · Nov 5, 2005

Replies: 1

Views: 54K

Alkali Metals and Ionization Energy

Nov 4, 2005 · Replies 1 · Nov 5, 2005

Replies: 1

Views: 13K

Problem with titration problem Please HELP

Nov 1, 2005 · Replies 1 · Nov 4, 2005

Replies: 1

Views: 4K

Balancing Redox Reactions in Basic Solutions

Nov 3, 2005 · Replies 1 · Nov 4, 2005

Replies: 1

Views: 5K

Bismuth sulphide structural diagram

Nov 3, 2005 · Replies 2 · Nov 4, 2005

Replies: 2

Views: 5K

Why does the boiling point of a liquid increase with an increase in pressure?

Nov 3, 2005 · Replies 5 · Nov 4, 2005

Replies: 5

Views: 5K

P3+(g) --> P4+(g) + e-: Highest Ionization Energy

Nov 3, 2005 · Replies 2 · Nov 4, 2005

Replies: 2

Views: 27K

What is the Diameter of an Iridium Atom in Angstroms?

Oct 30, 2005 · Replies 3 · Nov 4, 2005

Replies: 3

Views: 4K

Can potato skin effect the rate at which catalase breaks down hydrogen peroxide

Nov 4, 2005 · Replies 1 · Nov 4, 2005

Replies: 1

Views: 7K

Explanations of variations in errors with regards to enzymes

Nov 3, 2005 · Replies 2 · Nov 3, 2005

Replies: 2

Views: 3K

The variable R as the Universal Gas Constant

Nov 3, 2005 · Replies 1 · Nov 3, 2005

Replies: 1

Views: 5K

Column Chromatography: Speculate on Why Compounds Came Off as Mixture

Nov 1, 2005 · Replies 2 · Nov 3, 2005

Replies: 2

Views: 11K

Nuclides: Highest or Lowest Binding Energy Most Stable?

Nov 2, 2005 · Replies 3 · Nov 3, 2005

Replies: 3

Views: 3K

Testing Phenotypic Ratios: Results of Chi Square Test

Nov 2, 2005 · Replies 1 · Nov 2, 2005

Replies: 1

Views: 5K

Question on Endo/Exothermic reactions

Nov 1, 2005 · Replies 3 · Nov 2, 2005

Replies: 3

Views: 12K

Equilibrium: Iron(III) as Indicator for Ag+ Concentration

Nov 2, 2005 · Replies 2 · Nov 2, 2005

Replies: 2

Views: 10K

The equation is the speed of light = wavelength * frequency right?

Nov 1, 2005 · Replies 5 · Nov 1, 2005

Replies: 5

Views: 3K

How to Determine the Chemical Formula and Identify Illinium?

Oct 30, 2005 · Replies 1 · Oct 31, 2005

Replies: 1

Views: 3K

Endocytosis Explained: Receptors & How They Work

Oct 30, 2005 · Replies 3 · Oct 30, 2005

Replies: 3

Views: 3K

Calculating Empirical Formula | Antimony & Sulfur Reaction

Oct 29, 2005 · Replies 4 · Oct 30, 2005

Replies: 4

Views: 4K

Understanding Enzymes: Error Bars, Substrate Drops, and Insulin Structure

Oct 28, 2005 · Replies 3 · Oct 30, 2005

Replies: 3

Views: 5K

Highest second ionization energy of elements

Oct 29, 2005 · Replies 1 · Oct 30, 2005

Replies: 1

Views: 5K

How much energy is required to ionize one atom of Al?

Oct 29, 2005 · Replies 1 · Oct 29, 2005

Replies: 1

Views: 4K

Help With Half Reaction/Redox Equation

Oct 28, 2005 · Replies 2 · Oct 29, 2005

Replies: 2

Views: 24K

What Are the Basic Pathologies Related to Sugar Metabolism in Humans?

Oct 27, 2005 · Replies 1 · Oct 28, 2005

Replies: 1

Views: 3K

Biology Genetics-Two heterozygous brown-eyed (Bb)

Oct 26, 2005 · Replies 8 · Oct 27, 2005

Replies: 8

Views: 10K

How Many Electrons Are Transferred in This Balanced Equation?

Oct 26, 2005 · Replies 2 · Oct 27, 2005

Replies: 2

Views: 17K

Balancing Redox Reactions: Ion Electron Method Explained

Oct 26, 2005 · Replies 3 · Oct 27, 2005

Replies: 3

Views: 12K

Calculating Weight of Argon in a Cylinder

Oct 26, 2005 · Replies 3 · Oct 27, 2005

Replies: 3

Views: 4K

Enthelpy of Dissolution vs. Enthelpy of Solution

Oct 26, 2005 · Replies 4 · Oct 26, 2005

Replies: 4

Views: 37K

Biology How Do Viruses Mutate?

Oct 26, 2005 · Replies 2 · Oct 26, 2005

Replies: 2

Views: 2K

Calculating Human Lifespan with Avagadro's Number: A Quick Chemistry Question

Oct 26, 2005 · Replies 2 · Oct 26, 2005

Replies: 2

Views: 6K

Factor(s) that affect percent yield

Oct 25, 2005 · Replies 2 · Oct 26, 2005

Replies: 2

Views: 25K

How Can Sordaria Illuminate Genetic Studies in Haploid Organisms?

Oct 16, 2005 · Replies 14 · Oct 25, 2005

Replies: 14

Views: 11K

What Are the Products of These Double Replacement Reactions?

Oct 25, 2005 · Replies 1 · Oct 25, 2005

Replies: 1

Views: 18K

Dissolving Non-Polar Solutes in Cyclohexane

Oct 25, 2005 · Replies 1 · Oct 25, 2005

Replies: 1

Views: 3K

Help with Complex Chemical Reactions Needed

Oct 25, 2005 · Replies 1 · Oct 25, 2005

Replies: 1

Views: 3K

What is a Sphere Equation? Help with Chemistry Problem

Oct 24, 2005 · Replies 12 · Oct 25, 2005

Replies: 12

Views: 4K

Rates of Reaction: Sodium Thiosulphate & HCl

Oct 25, 2005 · Replies 1 · Oct 25, 2005

Replies: 1

Views: 3K

Help with Equations: Solve 'em Quick!

Oct 25, 2005 · Replies 1 · Oct 25, 2005

Replies: 1

Views: 2K

What Volume of KOH is Needed to Titrate H2SO4 Solution?

Oct 24, 2005 · Replies 2 · Oct 24, 2005

Replies: 2

Views: 2K

What Challenges Arise in Calculating pH Changes in Buffer Solutions?

Oct 21, 2005 · Replies 2 · Oct 24, 2005

Replies: 2

Views: 4K

Entropy How much of the water is solid?

Oct 19, 2005 · Replies 3 · Oct 24, 2005

Replies: 3

Views: 2K

How Many Grams of Methane to Heat Your Home?

Oct 23, 2005 · Replies 4 · Oct 24, 2005

Replies: 4

Views: 4K

Calculating Freezing Point of 50% Antifreeze Radiator Fluid

Oct 23, 2005 · Replies 2 · Oct 24, 2005

Replies: 2

Views: 6K

Dodecahedral Metal Coordination: Are There Two Distances to Coordinating Atoms?

Oct 20, 2005 · Replies 1 · Oct 24, 2005

Replies: 1

Views: 3K

Confused about Mixtures and Substances? Get Help Now!

Oct 23, 2005 · Replies 4 · Oct 24, 2005

Replies: 4

Views: 12K

Chemistry - Stoichiometry - Some limiting reactants

Oct 23, 2005 · Replies 3 · Oct 23, 2005

Replies: 3

Views: 13K

What is the Formation Constant of Iron(III) Thiocyanate?

Oct 20, 2005 · Replies 3 · Oct 23, 2005

Replies: 3

Views: 17K

Why do certain sugars produce more CO2 in anaerobic reactions?

Oct 18, 2005 · Replies 5 · Oct 23, 2005

Replies: 5

Views: 4K

Help with light, wavelength, and photons

Oct 21, 2005 · Replies 3 · Oct 23, 2005

Replies: 3

Views: 5K

Chemistry: Algebra Combining Equations [Enthelpy]

Oct 22, 2005 · Replies 2 · Oct 22, 2005

Replies: 2

Views: 9K

Calculate the change in energy of the hydrogen atom

Oct 21, 2005 · Replies 1 · Oct 22, 2005

Replies: 1

Views: 3K

[chem]Lewis Structure-Expanded Valence Shell

Oct 21, 2005 · Replies 1 · Oct 22, 2005

Replies: 1

Views: 8K

What are the historical uses and discovery of Beryllium?

Oct 22, 2005 · Replies 1 · Oct 22, 2005

Replies: 1

Views: 3K

Light that has enough energy to cause this bond to break?

Oct 22, 2005 · Replies 1 · Oct 22, 2005

Replies: 1

Views: 2K

Calculate the energy of this photon in Joules

Oct 22, 2005 · Replies 1 · Oct 22, 2005

Replies: 1

Views: 3K

Cars & Corrosion: 6 Testing Methods & Protection

Oct 21, 2005 · Replies 1 · Oct 21, 2005

Replies: 1

Views: 5K

How Can a Researcher Correctly Prepare Ba3(PO4)2 Instead of Ba(HPO4)?

Oct 20, 2005 · Replies 1 · Oct 21, 2005

Replies: 1

Views: 4K

Kinetics of an iodine clock reaction?

Oct 20, 2005 · Replies 1 · Oct 21, 2005

Replies: 1

Views: 13K

What are the three essential fatty acids found in flaxseed oil capsules?

Oct 20, 2005 · Replies 6 · Oct 21, 2005

Replies: 6

Views: 4K

My Textbook Wrong? Chemical Change Examples Explained

Oct 20, 2005 · Replies 3 · Oct 21, 2005

Replies: 3

Views: 3K

Cellular respiration biology lab discussion

Oct 19, 2005 · Replies 2 · Oct 20, 2005

Replies: 2

Views: 17K

Which wave would you observe first?

Oct 20, 2005 · Replies 2 · Oct 20, 2005

Replies: 2

Views: 3K

Could someone check this for me? (photon and wavelength)

Oct 17, 2005 · Replies 1 · Oct 20, 2005

Replies: 1

Views: 3K

Bunch of Equations and Stoichiometry

Oct 18, 2005 · Replies 4 · Oct 20, 2005

Replies: 4

Views: 3K

Energy is emitted by one excited sodium atom when it generates a photon?

Oct 19, 2005 · Replies 1 · Oct 20, 2005

Replies: 1

Views: 4K

Reaction of PbO and NaOH: What's the Product?

Oct 19, 2005 · Replies 1 · Oct 19, 2005

Replies: 1

Views: 14K

Calculating Total Entropy Change for a Three-Step Process

Oct 19, 2005 · Replies 1 · Oct 19, 2005

Replies: 1

Views: 2K

How Can You Identify a Nucleophile Without a Charge?

Oct 17, 2005 · Replies 1 · Oct 19, 2005

Replies: 1

Views: 3K

What would I do to be able to recover the silver metal?

Oct 18, 2005 · Replies 3 · Oct 18, 2005

Replies: 3

Views: 2K

Precipitation Reaction: K2SO4 + Ba(NO3)2

Oct 18, 2005 · Replies 1 · Oct 18, 2005

Replies: 1

Views: 15K

How Do You Determine Reactivity in Double Displacement Reactions?

Oct 18, 2005 · Replies 3 · Oct 18, 2005

Replies: 3

Views: 3K

How can you test for the presence of citral?

Oct 17, 2005 · Replies 4 · Oct 18, 2005

Replies: 4

Views: 5K

How Large Can the Surface Area of Pulmonary Capillaries Get?

Oct 17, 2005 · Replies 3 · Oct 18, 2005

Replies: 3

Views: 4K

Balancing Acid-Base Reactions with Acetic Acid and Ethylene Diamine

Oct 17, 2005 · Replies 3 · Oct 18, 2005

Replies: 3

Views: 8K

Concentration Graphs: Instantaneous time

Oct 17, 2005 · Replies 3 · Oct 18, 2005

Replies: 3

Views: 12K

Reduction of C=O: Clemensen vs Wolf-Kischner

Oct 17, 2005 · Replies 2 · Oct 17, 2005

Replies: 2

Views: 3K

Learn About Meiosis: How Does Cell Size Change?

Oct 16, 2005 · Replies 1 · Oct 16, 2005

Replies: 1

Views: 3K

Calculating the Mass of a Star from a Planet's Orbital Period

Oct 16, 2005 · Replies 1 · Oct 16, 2005

Replies: 1

Views: 3K

How to Determine the Rate of Reaction for NaHCO3 and H2SO4?

Oct 13, 2005 · Replies 2 · Oct 16, 2005

Replies: 2

Views: 6K

How to Calculate Molality for a 0.5% Urea Solution at 0°C?

Oct 16, 2005 · Replies 1 · Oct 16, 2005

Replies: 1

Views: 4K

Calculate Degree of Dissociation & pH of 0.1M Propionic Acid

Oct 16, 2005 · Replies 1 · Oct 16, 2005

Replies: 1

Views: 21K

Calculating the pH of 0.1M Acetic Acid Neutralized by NaOH (Ka = 1.7 x 10^-5)

Oct 16, 2005 · Replies 1 · Oct 16, 2005

Replies: 1

Views: 14K

How Do You Calculate Freezing and Boiling Points of Solutions?

Oct 13, 2005 · Replies 5 · Oct 16, 2005

Replies: 5

Views: 5K

Chemistry Please help me in finding this relative molecular weight

Oct 15, 2005 · Replies 1 · Oct 15, 2005

Replies: 1

Views: 3K

Hemoglobin Binding: Cooperativity Explained

Oct 11, 2005 · Replies 2 · Oct 15, 2005

Replies: 2

Views: 4K

Is Acetic Acid Protonated or Deprotonated at Different pH Levels?

Oct 14, 2005 · Replies 1 · Oct 14, 2005

Replies: 1

Views: 22K

Calc Net Charge of Guanine @ pH 3.5

Oct 13, 2005 · Replies 1 · Oct 14, 2005

Replies: 1

Views: 12K

Stoichiometry, Part II (and Percentage Yield)

Oct 3, 2005 · Replies 4 · Oct 13, 2005

Replies: 4

Views: 8K

What Happens to Beet Root Pigments When Cells are Disrupted with Chloroform?

Oct 7, 2005 · Replies 7 · Oct 13, 2005

Replies: 7

Views: 25K

Help With Balancing CO2+ Mg -> MgC + O2

Oct 12, 2005 · Replies 7 · Oct 12, 2005

Replies: 7

Views: 7K

Polyatomic ions, -ate and -ite suffixes

Oct 12, 2005 · Replies 4 · Oct 12, 2005

Replies: 4

Views: 43K

Bio and Chem Homework Help

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