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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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Finding the amount of sulfur dioxide

Mar 10, 2012 · Replies 9 · Mar 11, 2012

Replies: 9

Views: 3K

What Is the Role of Ethanol in Precipitating Salts?

Mar 11, 2012 · Replies 6 · Mar 11, 2012

Replies: 6

Views: 3K

Chemical kinetics diagramm -> chemical equation

Mar 7, 2012 · Replies 3 · Mar 11, 2012

Replies: 3

Views: 4K

The density of a substance_______as the temperature increases.

Mar 10, 2012 · Replies 10 · Mar 11, 2012

Replies: 10

Views: 3K

What's the Volume of a 100g Substance with a Density of 2.40 g/mL?

Mar 10, 2012 · Replies 8 · Mar 11, 2012

Replies: 8

Views: 3K

Which of the following numbers can be added directly in exponential notation?

Mar 10, 2012 · Replies 6 · Mar 10, 2012

Replies: 6

Views: 2K

EPMA: How it Works & What it Analyzes

Mar 7, 2012 · Replies 1 · Mar 9, 2012

Replies: 1

Views: 2K

Which compound is more acidic? (without using pkA value) HCl or H2SO4

Mar 8, 2012 · Replies 4 · Mar 9, 2012

Replies: 4

Views: 9K

Spontaneous drug release rate equation

Mar 8, 2012 · Replies 4 · Mar 8, 2012

Replies: 4

Views: 3K

External lateral parabrachial nucleus: where it is located?

Mar 4, 2012 · Replies 2 · Mar 7, 2012

Replies: 2

Views: 2K

Which will give better neuclophilic addition reaction?

Mar 5, 2012 · Replies 1 · Mar 7, 2012

Replies: 1

Views: 2K

Chemistry Solving a Chemistry Equation: Question 10

Mar 5, 2012 · Replies 3 · Mar 6, 2012

Replies: 3

Views: 5K

What Units Should Pressure Be in for the Clausius Clapeyron Equation?

Feb 28, 2012 · Replies 6 · Mar 6, 2012

Replies: 6

Views: 12K

Which Is the Best Leaving Group: Cl-, Enolate, or NR3?

Feb 27, 2012 · Replies 1 · Mar 5, 2012

Replies: 1

Views: 2K

Problem balancing equation to be able to write net ionic equation. Please help

Mar 5, 2012 · Replies 2 · Mar 5, 2012

Replies: 2

Views: 3K

Possible Uses of Bacterial DNA Replication

Mar 3, 2012 · Replies 1 · Mar 5, 2012

Replies: 1

Views: 3K

How do I turn FeCl3•6H2O crystals into 0.5M solution?

Mar 4, 2012 · Replies 1 · Mar 4, 2012

Replies: 1

Views: 5K

Chemistry: Writing Rate Law from Rate Constant & Order

Feb 25, 2012 · Replies 5 · Mar 3, 2012

Replies: 5

Views: 4K

Determining Initial and Equilibrium Concentration (Help )

Mar 2, 2012 · Replies 4 · Mar 2, 2012

Replies: 4

Views: 5K

Calculating % Abundance of Br-79 & Br-81

Mar 1, 2012 · Replies 2 · Mar 2, 2012

Replies: 2

Views: 3K

Find Remaining NO Concentration: 2NO + 2H2 → N2 + 2H2O, 0.006M NO, 0.002M H2

Feb 22, 2012 · Replies 3 · Mar 1, 2012

Replies: 3

Views: 3K

Complete and Net Ionic Equations

Feb 29, 2012 · Replies 3 · Mar 1, 2012

Replies: 3

Views: 8K

What Is Fuming in Organic Chemistry?

Mar 1, 2012 · Replies 1 · Mar 1, 2012

Replies: 1

Views: 3K

Some Radiological Dating with Stoichiometry

Feb 27, 2012 · Replies 4 · Feb 29, 2012

Replies: 4

Views: 4K

Can NaOH Deprotonate Benzene Derivative?

Feb 25, 2012 · Replies 1 · Feb 29, 2012

Replies: 1

Views: 3K

When Should Pairing Energy Be Included in LFSE Calculations?

Oct 9, 2011 · Replies 1 · Feb 28, 2012

Replies: 1

Views: 15K

Why Is Phosphor Emission Duration Crucial in TV Screen Design?

Feb 28, 2012 · Replies 1 · Feb 28, 2012

Replies: 1

Views: 2K

Gas chromotography-mass spec percent composition

Feb 27, 2012 · Replies 1 · Feb 28, 2012

Replies: 1

Views: 3K

PH of HCl solution as a function of volume.

Feb 27, 2012 · Replies 1 · Feb 28, 2012

Replies: 1

Views: 3K

Can strong acids and salts be used to create a pH 0.5 buffer?

Feb 26, 2012 · Replies 2 · Feb 27, 2012

Replies: 2

Views: 4K

Bio Homework Review (Please check and Correct)

Feb 16, 2012 · Replies 11 · Feb 27, 2012

Replies: 11

Views: 20K

Which Is More Acidic: H₂SO₄ or H₂SeO₄?

Feb 26, 2012 · Replies 1 · Feb 26, 2012

Replies: 1

Views: 5K

Reaction Prediction - Is there a reaction?

Feb 26, 2012 · Replies 3 · Feb 26, 2012

Replies: 3

Views: 3K

Calculating Molarity of NaOH in a Titration/pH Problem

Feb 26, 2012 · Replies 1 · Feb 26, 2012

Replies: 1

Views: 6K

How Do You Calculate the Activity Coefficient of H+ from pH?

Feb 25, 2012 · Replies 2 · Feb 26, 2012

Replies: 2

Views: 7K

Find the final product. Organic Chemistry.

Feb 24, 2012 · Replies 2 · Feb 25, 2012

Replies: 2

Views: 3K

Transcription AQA Question (incorrect MS?)

Feb 24, 2012 · Replies 5 · Feb 25, 2012

Replies: 5

Views: 3K

ΔTF = KF × b × i freezing point saltwater

Feb 24, 2012 · Replies 7 · Feb 25, 2012

Replies: 7

Views: 17K

How Do Oily Fingers Affect Hydrated Salt Mass Measurement?

Feb 23, 2012 · Replies 1 · Feb 24, 2012

Replies: 1

Views: 13K

What Sub-Structure Does a 369.3 Mass Indicate in Cholesterol LCMS Analysis?

Feb 22, 2012 · Replies 3 · Feb 24, 2012

Replies: 3

Views: 3K

Bioenergy: how to measure the efficiency of different materials

Feb 22, 2012 · Replies 3 · Feb 23, 2012

Replies: 3

Views: 3K

How much gas is released given partial pressure

Feb 19, 2012 · Replies 3 · Feb 23, 2012

Replies: 3

Views: 5K

Solving for NO2 in Nitric Acid Production Equation | Stoichiometry Assistance

Feb 22, 2012 · Replies 3 · Feb 23, 2012

Replies: 3

Views: 3K

Help! Can't Find Primary Sources for Lab Report

Feb 21, 2012 · Replies 3 · Feb 22, 2012

Replies: 3

Views: 3K

How many milligrams of Vitamin C were in the original tablet?

Feb 19, 2012 · Replies 5 · Feb 22, 2012

Replies: 5

Views: 10K

How much of solution to reach the endpoint of titration?

Feb 19, 2012 · Replies 5 · Feb 22, 2012

Replies: 5

Views: 7K

Dienophile and diene help? organic chemistry

Feb 19, 2012 · Replies 13 · Feb 22, 2012

Replies: 13

Views: 4K

Determining pressure at equilibrium with Kp

Feb 21, 2012 · Replies 1 · Feb 22, 2012

Replies: 1

Views: 3K

Find the final temperature of water

Feb 20, 2012 · Replies 4 · Feb 21, 2012

Replies: 4

Views: 4K

What Are Some Do-Able Phytoplankton Experiment Topics?

Feb 19, 2012 · Replies 1 · Feb 21, 2012

Replies: 1

Views: 2K

Sodium borohydride reductions and chromatography

Feb 18, 2012 · Replies 1 · Feb 21, 2012

Replies: 1

Views: 4K

Identify any errors in the name of each hydrocarbon?

Feb 19, 2012 · Replies 3 · Feb 20, 2012

Replies: 3

Views: 3K

How Does the Electrochemical Series Determine Metal Use in Coinage?

Feb 19, 2012 · Replies 1 · Feb 20, 2012

Replies: 1

Views: 3K

Introductory Stoichiometry Question

Feb 19, 2012 · Replies 1 · Feb 20, 2012

Replies: 1

Views: 2K

Help Solving Percent Molarity Problem

Feb 19, 2012 · Replies 1 · Feb 19, 2012

Replies: 1

Views: 3K

Solve Titration Problem: pH of Initial, Equiv., Mid & End Point

Feb 19, 2012 · Replies 1 · Feb 19, 2012

Replies: 1

Views: 3K

Chemistry Help Needed: Solving Acid & Base Reactions Questions!

Feb 17, 2012 · Replies 8 · Feb 18, 2012

Replies: 8

Views: 4K

What Are the Steps Involved in Enzyme Synthesis?

Feb 17, 2012 · Replies 1 · Feb 18, 2012

Replies: 1

Views: 3K

Necessity of oxygen in an/aerobic respiration

Feb 17, 2012 · Replies 1 · Feb 18, 2012

Replies: 1

Views: 3K

Stoichiometric reactions with weight percent

Feb 17, 2012 · Replies 5 · Feb 17, 2012

Replies: 5

Views: 3K

Need help with science experiment calculations

Feb 14, 2012 · Replies 1 · Feb 17, 2012

Replies: 1

Views: 2K

Solving Concentration Problems: Sodium Cations

Feb 17, 2012 · Replies 2 · Feb 17, 2012

Replies: 2

Views: 2K

Why Aren't Reaction Orders Always Integers?

Feb 16, 2012 · Replies 2 · Feb 16, 2012

Replies: 2

Views: 9K

Balancing Redox Reaction by Half Reaction Method

Feb 15, 2012 · Replies 4 · Feb 16, 2012

Replies: 4

Views: 6K

Finding the average concentrations given average Keq

Feb 14, 2012 · Replies 3 · Feb 15, 2012

Replies: 3

Views: 6K

Reflection loss and refractive index

Feb 14, 2012 · Replies 1 · Feb 15, 2012

Replies: 1

Views: 10K

What Is the One-Year Forward Rate in Year 2 for Government Bonds?

Feb 3, 2012 · Replies 3 · Feb 14, 2012

Replies: 3

Views: 3K

What are the partial pressures of H2, Br2, and HBr at equilibrium?

Feb 13, 2012 · Replies 2 · Feb 14, 2012

Replies: 2

Views: 10K

Gradual temperature drop when freezing

Feb 13, 2012 · Replies 1 · Feb 14, 2012

Replies: 1

Views: 6K

Can you please check my answers to those short astronomy questions?

Feb 10, 2012 · Replies 1 · Feb 13, 2012

Replies: 1

Views: 4K

Can Vinegar and Sulfuric Acid Solutions Share the Same pH?

Feb 11, 2012 · Replies 3 · Feb 13, 2012

Replies: 3

Views: 3K

Simple questions on solutions concentration and pH

Feb 12, 2012 · Replies 1 · Feb 13, 2012

Replies: 1

Views: 3K

How to Determine the Mass of an Ice Cube Using a Calorimeter?

Feb 13, 2012 · Replies 1 · Feb 13, 2012

Replies: 1

Views: 13K

Chemistry Electron Geometry and Molecular Geometry

Feb 9, 2012 · Replies 1 · Feb 13, 2012

Replies: 1

Views: 5K

Exercise in propagating uncertainty in a simple calculation.

Feb 6, 2012 · Replies 1 · Feb 13, 2012

Replies: 1

Views: 3K

How Does Adding Flour Affect the Stretchiness of Slime?

Feb 12, 2012 · Replies 1 · Feb 13, 2012

Replies: 1

Views: 3K

Is Hybridization Affecting Molecular Planarity and Aromaticity?

Feb 12, 2012 · Replies 1 · Feb 13, 2012

Replies: 1

Views: 4K

Finding the pH of a buffer solution when a strong acid is added

Feb 12, 2012 · Replies 1 · Feb 13, 2012

Replies: 1

Views: 5K

Can't figure this radioactive thing out

Feb 11, 2012 · Replies 1 · Feb 13, 2012

Replies: 1

Views: 2K

Finding pH of solutions with an acid and base

Feb 12, 2012 · Replies 1 · Feb 12, 2012

Replies: 1

Views: 3K

Hi guys, im having some doubts getting this exercise:20,0 g of

Feb 12, 2012 · Replies 3 · Feb 12, 2012

Replies: 3

Views: 2K

Predicting Reaction: Ca(NO3)2 + NaHCO3 --> Ca(HCO3)2 or CaCO3 + NaNO3 + H20?

Feb 10, 2012 · Replies 1 · Feb 12, 2012

Replies: 1

Views: 2K

Spectrophotometry of chromium salt

Feb 12, 2012 · Replies 3 · Feb 12, 2012

Replies: 3

Views: 3K

What stage of mitosis can chromosomes be counted and why?

Feb 10, 2012 · Replies 1 · Feb 10, 2012

Replies: 1

Views: 3K

Chemistry Classify each solid as a covalent, ionic, metallic, or molecular solid.

Feb 10, 2012 · Replies 1 · Feb 10, 2012

Replies: 1

Views: 16K

Missing elements of Grignard reagent reactions

Jan 30, 2012 · Replies 1 · Feb 10, 2012

Replies: 1

Views: 3K

How Much Sodium Is Required to Produce 8g of Sodium Hydroxide?

Feb 10, 2012 · Replies 4 · Feb 10, 2012

Replies: 4

Views: 3K

Calc Cv from T & V: How to Calculate Cv Homework

Feb 9, 2012 · Replies 6 · Feb 10, 2012

Replies: 6

Views: 12K

Sorting Lattice Energies: KF, MgS, RbI

Feb 10, 2012 · Replies 1 · Feb 10, 2012

Replies: 1

Views: 4K

Chemistry Problem involving specific heat capacity and energy change

Feb 9, 2012 · Replies 1 · Feb 10, 2012

Replies: 1

Views: 3K

Copper & Silver Nitrate: Applying to Daily Life

Feb 6, 2012 · Replies 1 · Feb 9, 2012

Replies: 1

Views: 6K

Determing Boiling Point elevations in lab

Feb 6, 2012 · Replies 12 · Feb 9, 2012

Replies: 12

Views: 3K

Mass spectrometry data analysis

Jan 31, 2012 · Replies 10 · Feb 9, 2012

Replies: 10

Views: 8K

Hypothetical atom + Rydberg equation

Feb 8, 2012 · Replies 1 · Feb 9, 2012

Replies: 1

Views: 6K

How Do Physics Formulas Explain the Function of Crumple Zones?

Aug 21, 2010 · Replies 5 · Feb 7, 2012

Replies: 5

Views: 22K

Raoult's Law, Finding an unknown compound

Feb 7, 2012 · Replies 2 · Feb 7, 2012

Replies: 2

Views: 3K

Determine the rate of reaction with respect to I-

Feb 7, 2012 · Replies 1 · Feb 7, 2012

Replies: 1

Views: 4K

Calculate Moles of Terephthalic Acid from PET Depolymerization

Feb 5, 2012 · Replies 3 · Feb 6, 2012

Replies: 3

Views: 5K

Stuck on a thermodynamics question (1st law)

Feb 5, 2012 · Replies 1 · Feb 6, 2012

Replies: 1

Views: 3K

Arhenius equation solving for K1/T2

Feb 5, 2012 · Replies 2 · Feb 6, 2012

Replies: 2

Views: 3K

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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