Biology and Chemistry Homework Help Forum

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PURE compound has higher melting point than the literature?

  • stanton
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3

Zinc Reacting with Hydrochloric Acid: STP Conditions

  • chawki
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1

Determine the molarity of NaOH used to titrate acetic acid.

  • rss14
  • · Replies 6 ·
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6

Mass and molar concentrations of O2, CO2 and N2 in air at 37°C

  • ana111790
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1

Why is Reaction Spontaneousity Not Occuring at 298K?

  • LordVoldemort
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1

Primary, secondary, tertiary alcohols

  • DespicableMe
  • · Replies 1 ·
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1

pH of hydrochloric acid solution from 0.040 mol HCl in 0.80 L water

  • chawki
  • · Replies 14 ·
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14

Why must elimination from ethanol remove OH and H, not H and H?

  • DespicableMe
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1

How Many Molecules of CO2 and Water Vapour Are in 1 Cubic Metre of Air?

  • alytal
  • · Replies 9 ·
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9

Is freezing supercooled water at -10°C spontaneous?

  • Dars
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1

Heat of vaporization/final temperature

  • luffyiskind
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3

Methane in natural gas burns completely in oxygen

  • chawki
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4
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1

Chemistry: Separating mixtures assesement

  • warwick$$
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1

Acid-Base Reaction: Hydrochloric Acid and Magnesium Oxide Formula

  • chawki
  • · Replies 5 ·
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5

Is Peanut Oil Amphipathic or Hydrophobic?

  • lha08
  • · Replies 2 ·
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2

How Much Stomach Acid Can One Antacid Tablet Neutralize?

  • AnnaYL
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1

Concentration of NaCl and water in a 3L solution with 250g salt

  • chawki
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2

Maximum Dissolved O2 in 1L Water @ 25C with 40 mmHg Partial Pressure?

  • TypeFun
  • · Replies 1 ·
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1

What is the Vapor Pressure of a Urea Solution at 24 C?

  • TypeFun
  • · Replies 1 ·
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1

Preparation of a 250 mL .25 molal solution of CaCl2

  • TypeFun
  • · Replies 1 ·
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1

Chemistry Calculating Molality and Mole Fraction for a 10% (by wt) Solution of KNO3

  • TypeFun
  • · Replies 1 ·
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1

How to Calculate Ksp for Ferrous Oxalate in a Galvanic Cell?

  • reising1
  • · Replies 1 ·
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1

Can a Wine with 28.4% Ethanol by Weight Freeze at -10 C?

  • TypeFun
  • · Replies 2 ·
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2

How Do Ether and Alcohol Differ in Physical Properties?

  • DespicableMe
  • · Replies 1 ·
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1

How Much Gas is Produced from 8.8g of N2O Decomposition at STP?

  • chawki
  • · Replies 13 ·
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13

Calculate the surface area of 1 g of TiO2 powder

  • kpx001
  • · Replies 5 ·
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5

Reversible Adiabatic Expansion for an Ideal Gas

  • adiabaffled
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1

Finding equilibrium [HI] for H2 + I2 reaction at 400°C

  • ColinTI89
  • · Replies 1 ·
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1

Calculate Mass of P in Apatite - 211.866kg

  • chawki
  • · Replies 2 ·
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2

Chemistry What is the molecular formula for nitrogen oxide?

  • chawki
  • · Replies 11 ·
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11

Hydrocarbons have different structures but the same atoms

  • chawki
  • · Replies 3 ·
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3

How to Calculate Initial Molarity of S2O32- in a Trial

  • TypeFun
  • · Replies 8 ·
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8

How Much Natural Gas Is Needed to Produce One Tonne of Ammonia?

  • ABR124
  • · Replies 1 ·
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1

Estimating DNA Polymerase Numbers in Eukaryotic Cells

  • Damascus Road
  • · Replies 2 ·
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2

Microbiology Quiz Question (transcription/DNA replication)

  • negatifzeo
  • · Replies 1 ·
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1

Volume of CO2 produced at STP from decomposing 152 g of CaCO3

  • chawki
  • · Replies 9 ·
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9

Chemistry Molecular Biology (Molecular Chaperone Proteins)

  • ChelsM
  • · Replies 2 ·
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2

Calculate 73.936 with Absolute Uncertainty

  • yang09
  • · Replies 2 ·
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2

Caculating normal boiling point using an equation of a line

  • ahhppull
  • · Replies 1 ·
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1

Endothermic Formation of Chloro and Aquo Complexes: Le Chatelier's Principle

  • P-Illiterate
  • · Replies 1 ·
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1

Why must you report temperature when reporting a rate constant?

  • TypeFun
  • · Replies 1 ·
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1

Finding molar mass, number of ions, and moles of compounds

  • chawki
  • · Replies 2 ·
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2
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5

Lab Preparation Using a solid, DI water, a balance, and a flask

  • TypeFun
  • · Replies 5 ·
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5

What Is the Equilibrium Constant for This Reaction?

  • Raul3140
  • · Replies 1 ·
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1

Is a Sodium Atom Found Naturally in the World?

  • td21
  • · Replies 6 ·
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6

Calculate Caffeine Molecular Formula: C8H10N4O2

  • chawki
  • · Replies 2 ·
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2

How do you write word equations for chemical reactions?

  • Engineering19
  • · Replies 2 ·
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2

Chemical Electric CELL with graphite electrodes?

  • matthew77ask
  • · Replies 8 ·
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8

Highschool chemistry question on Le Chatlier's Principle

  • j3llzang
  • · Replies 1 ·
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1

What is the lowest energy conformation for 3-methyl-2-butanol?

  • n.a.s.h
  • · Replies 2 ·
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2

Calculating the Mass of an Aluminum Unit Cell

  • tica86
  • · Replies 2 ·
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2

Why is NaOH used to purify 1-Bromobutane in 1-Butanol synthesis?

  • Hockeystar
  • · Replies 6 ·
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6

I need to know if i correct (Chemistry)

  • omni
  • · Replies 6 ·
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6

Chemistry Converting atmospheric gas concentration to parts per million

  • helpemz2011
  • · Replies 10 ·
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10

Calculate CO2 and water vapour molecules in 1 m³ of air

  • helpemz2011
  • · Replies 15 ·
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15

Precipitation reactions for sparingly soluble compounds?

  • Vals509
  • · Replies 2 ·
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2

Chemical Equilibrium and Probability

  • flybynight
  • · Replies 1 ·
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1

Grouping Molecules: Urea, Thiourea, Ethanol, etc.

  • n.a.s.h
  • · Replies 1 ·
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1

Decide if this compound has any enantiomers

  • n.a.s.h
  • · Replies 1 ·
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1
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1

How to Determine the pH of a Buffer Made with K2HPO4 and KH2PO4?

  • kk727
  • · Replies 3 ·
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3
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5

How to find the ph in a strong base weak acid titration?

  • nvidia69
  • · Replies 1 ·
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1

What Are the Genetic Consequences of Sordaria Fimicola Being Haploid?

  • sdoyle1
  • · Replies 1 ·
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1

What Isomer of C6H12O2 Matches This NMR Spectrum?

  • mychelle0430
  • · Replies 4 ·
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4
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1

Using small samples of ether is better in an extraction?

  • schoolboy10
  • · Replies 11 ·
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11
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4

Is a hydrate affected by a coeffiecient?

  • torquemada
  • · Replies 6 ·
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6

Why Can Dimethyl Ether Extract Benzoic Acid But Dioxane Cannot?

  • schoolboy10
  • · Replies 11 ·
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11

What is the correct unit this volume equation?

  • jle1092
  • · Replies 2 ·
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2

Are PCR markers linked to the hemophilia gene in this pedigree?

  • xregina12
  • · Replies 3 ·
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3

Calculating the Neutralization of Acid in Grapefruit Juice

  • sunfire249
  • · Replies 2 ·
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2

What Can Whole-Cell Patch Clamp Electrophysiology Record?

  • jnimagine
  • · Replies 1 ·
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1

Calculating Mass Fraction of Inerts in Gas Mixture

  • juice34
  • · Replies 1 ·
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1

Finding concentration of Permanganate

  • lcary
  • · Replies 3 ·
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3

Why is Specific Rotation Not a Colligative Property? Answers Here

  • pseudogirl
  • · Replies 3 ·
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3

Calculating Energy from Wavelengths: How do I Use the Equation?

  • whatisphysics
  • · Replies 3 ·
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3

What is the Electron Configuration of Cd2+?

  • Altec103
  • · Replies 1 ·
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1

What is the pH of rain from U.S. SO2 emissions over Ontario?

  • AnnaYL
  • · Replies 1 ·
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1
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1

[Chemistry] Vapor pressure of water at temperature

  • RossH
  • · Replies 1 ·
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1

Calculating Molality of a Sulfuric Acid Solution

  • Ki-nana18
  • · Replies 2 ·
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2

How to balance chem.eq. with crystal water?

  • eventob
  • · Replies 5 ·
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5
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1

With the initial concentrations: [A] = 0.000500 M, = 0.000698 M,

  • mat331760298
  • · Replies 1 ·
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1
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2

Mono-nitrated product obtained on treating meta cresol

  • zorro
  • · Replies 2 ·
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2

[Chemistry] Trying to find the vapor pressure of water with pv=nRT

  • RossH
  • · Replies 1 ·
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1

How Can You Prove the Grunberg-Nissan Equation?

  • syki
  • · Replies 2 ·
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2

Snail Behavior Experiment: Testing Hypothesis on Hot Surface Avoidance

  • armolinasf
  • · Replies 1 ·
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1

Calculating Reaction Rate Increase with a Temp. Rise of 10degC

  • chemnoob.
  • · Replies 1 ·
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1

Balancing the cement reaction from limestone and clay

  • kerrwilk
  • · Replies 5 ·
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5

How to Balance This Redox Equation?

  • Saterial
  • · Replies 18 ·
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18

What is the impact of temperature on the rate of the reaction at 45C?

  • Saterial
  • · Replies 4 ·
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4

Percentage of nitrogen in urea

  • chawki
  • · Replies 3 ·
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3

What Will Be the Final Temperature of Water After Adding Steam?

  • Jm4872
  • · Replies 3 ·
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3

Electrolysis of aq CuCl2 with Ag electrode

  • matthew77ask
  • · Replies 8 ·
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8