Biology and Chemistry Homework Help Forum

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Biology What flow speed causes cavitation to occur?

  • ellenb899
  • · Replies 22 ·
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22

How does a Gas Chromatograph-Mass Spectrometer detect quantities?

  • BBChem42
  • · Replies 4 ·
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4

Chemistry A confusion about conductance of weak electrolytes

  • nafisanazlee
  • · Replies 6 ·
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6

Chemistry How Does Doubling Zinc Mass Affect Temperature Change in ZnO Formation?

  • cutielollipop
  • · Replies 3 ·
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3

Chemistry How Do I Solve Non-Bonding Valence Electrons for Three Valent Oxygens?

  • pachsiisjj
  • · Replies 1 ·
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1

Chemistry Calculate the pressure-volume work for the given reaction

  • anjauk2003
  • · Replies 3 ·
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3

Chemistry Converting NAD+ concentration from micromolar to nanograms per milliliter

  • Peterz
  • · Replies 1 ·
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1

Biology Which organs/parts of the body are only functional on glucose?

  • physicisttobe
  • · Replies 5 ·
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5

Simplified alum synthesis lab instructions for general chemistry

  • MightyCatt
  • · Replies 5 ·
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5

Chemistry Balancing formation of Perovskite solar cell components

  • Mayhem
  • · Replies 4 ·
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4

Can a dry cell be made rechargeable?

  • Doriangrey
  • · Replies 10 ·
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10

Chemistry How to understand hybridization in ##CH_3NNN##?

  • zenterix
  • · Replies 4 ·
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4

Chemistry Electron Transitions after Absorption of Photon

  • jolly_math
  • · Replies 7 ·
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7

Chemistry Electron Affinity: Adding Electrons to Valance Shells

  • SSG-E
  • · Replies 6 ·
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6

Chemistry Understanding electronic configuration

  • Chijioke
  • · Replies 8 ·
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8

Chemistry Why does calcium have 2,8,8,2 electrons per shell instead of 2,8,10?

  • Chijioke
  • · Replies 5 ·
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5

Chemistry Determination of the molecular structure of two organic compounds

  • Sommerfeld_01
  • · Replies 7 ·
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7

Chemistry Why doesn't the formula of chlorine nitrate contain a positive charge?

  • zenterix
  • · Replies 9 ·
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9

Chemistry How do we know ##BF_3## has Lewis structure but ##Al_2S_3## does not?

  • zenterix
  • · Replies 1 ·
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1

Chemistry Chemical Equation Balance: NaNO3 + NaOH + Zn -> NH3 + Na2ZnO2 + H2O

  • Say17
  • · Replies 5 ·
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5

Chemistry Find out the amount of the elements

  • Say17
  • · Replies 1 ·
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1

Chemistry Predicting the electron domain and molecular geometries

  • Joe20
  • · Replies 2 ·
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2

Chemistry Finding molar mass of halide compound from freezing point depression

  • Ako9
  • · Replies 6 ·
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6

What Is the Maximum Wavelength to Break the Weakest Bond in AsClF42-?

  • guiromero
  • · Replies 4 ·
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4

Chemistry Valence Bond Theory: Energy of a system with H and Cl atoms

  • WMDhamnekar
  • · Replies 6 ·
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6

Chemistry Hexagonal Packing Factor - Functional Molecules

  • VooDoo
  • · Replies 3 ·
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3

Photoluminescence at lower temperature of carbazole

  • EL AALLAOUI Najla
  • · Replies 1 ·
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1

Chemistry What Does Delta Gn Represent in the MIT Chemistry Course Equation?

  • guiromero
  • · Replies 2 ·
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2

Chemistry Why is My Second-Order Reaction Rate Calculation Incorrect?

  • guiromero
  • · Replies 6 ·
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6

Chemistry Reactions With Dilute Hydrochloric Acid

  • A13235378
  • · Replies 3 ·
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3

Thermodynamics Question Regarding Gibbs Free Energy, Enthalpy, Entropy

  • aquastor
  • · Replies 1 ·
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1

Chemistry Creating KF Molecule from Neutral Atoms: A Process of Ionization and Binding

  • zenterix
  • · Replies 2 ·
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2

Biology Why do fatty acids burn in the presence of carbon?

  • physicisttobe
  • · Replies 1 ·
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1

Biology Why does tight Ran-GEF binding result in GTP, not GDP?

  • physicisttobe
  • · Replies 7 ·
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7

How to get the structural formula of C3H6CI2?

  • chocolatte009911
  • · Replies 4 ·
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4

Chemistry Finding the molecular formula of an unknown hydrocarbon

  • zachary570
  • · Replies 4 ·
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4

Converting volume mixing ratio to molecular concentration

  • han_123
  • · Replies 5 ·
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5

Using 18% by weight ammonium hydroxide to make 16ppm aqueous solution

  • Frankenstein19
  • · Replies 2 ·
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2

Chemistry Finding equilibrium expression for an equilibrium equation

  • haha0p1
  • · Replies 4 ·
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4

Chemistry Derive an expression for mean free path from survival eqn exp(-x/λ)

  • P4Penguin
  • · Replies 5 ·
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5

Chemistry How to compute specific surface energy for cubes of varying sizes?

  • Guilty_Way6122
  • · Replies 1 ·
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1

Finding partial pressure at equilibrium

  • haha0p1
  • · Replies 5 ·
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5

Chemistry Finding indicator for acid-base titration

  • haha0p1
  • · Replies 7 ·
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7

Chemistry Mechanism for Solid-Phase Nucleic Acid Deprotection and Cleavage

  • physicisttobe
  • · Replies 2 ·
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2

Chemistry Draw the mechanism of the reactions of steps 1 and 2

  • physicisttobe
  • · Replies 4 ·
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4

Biology Why does relative substrate concentration decrease with competitive inhibitors?

  • physicisttobe
  • · Replies 14 ·
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14

Chemistry How Can XPS and ESR Determine Oxidation State in Coordination Compounds?

  • jolly_math
  • · Replies 5 ·
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5

Chemistry How do I know whether a base is strong or not?

  • simphys
  • · Replies 2 ·
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2

Chemistry Why is ethanol considered the parent chain in naming this benzene derivative?

  • jolly_math
  • · Replies 2 ·
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2

Are phosphoric acid and sugar linked by ether bonds in nucleotides?

  • physicisttobe
  • · Replies 4 ·
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4

Biology Calculating gradual chamber filling (CO2 displacing air)

  • Mahdivets
  • · Replies 5 ·
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5

Chemistry Moles of NaOH to Create Buffer Solution pH=6 in 0.42M Ethanoic Acid

  • stunner5000pt
  • · Replies 3 ·
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3

Chemistry Equilibrium potential when product is absent in Butler-Volmer equation

  • Dishsoap
  • · Replies 1 ·
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1

Chemistry Why do 2px and 2py electrons not affect OH bond order?

  • jolly_math
  • · Replies 7 ·
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7

Chemistry Why Does IF5 Exhibit a Square Pyramidal Shape Despite Exceeding the Octet Rule?

  • jolly_math
  • · Replies 1 ·
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1

Chemistry Confusion in relation of Gibbs free energy and equilibrium constant

  • tbn032
  • · Replies 4 ·
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4

Chemistry Units conversion for solution concentration

  • cheesycheese
  • · Replies 3 ·
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3

Problem regarding vapour density of a mixture

  • tbn032
  • · Replies 5 ·
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5

A K shell electron is ejected from a tungsten atom

  • tlrmaus
  • · Replies 4 ·
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4

Chemistry Why NaCl Instead of 2NaCl in Reactions?

  • simphys
  • · Replies 10 ·
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10

How are plantae protists similar and different from plant cells?

  • yahman
  • · Replies 2 ·
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2

Biology Draw the genetic cross for the given pedigree

  • Tasha Clifford
  • · Replies 1 ·
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1

Chemistry How can ideal gases be used to determine the change in enthalpy using Hess' law?

  • Tasha Clifford
  • · Replies 5 ·
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5

Biology Sketch the change of pH in the breakdown of proteins into amino acids

  • FlyingWhale
  • · Replies 6 ·
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6

Chemistry Where Did the 400g in Enthalpy Change of Neutralization Come From?

  • Iwanttolearnphysics
  • · Replies 3 ·
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3

Chemistry Converting scfm to lb/hr, which density should I use?

  • Frankenstein19
  • · Replies 5 ·
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5

Thermal Physics - Methane Fuel Cell

  • phil ess
  • · Replies 2 ·
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2

Chemistry How to convert 0.1 M pyridine to mL

  • cheesycheese
  • · Replies 6 ·
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6

Biology Huntington Disease Pedigree Problem

  • Sunwoo Bae
  • · Replies 2 ·
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2

Calculating Molar Enthalpy of C2H4 Combustion w/ Hess's Law

  • XxphysicsxX
  • · Replies 3 ·
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3

Chemistry Conformation Stability of Ethane-1,2-Diol

  • EnricoHendro
  • · Replies 1 ·
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1
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1

How to calculate the pI of a peptide?

  • DDS
  • · Replies 1 ·
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1

Primary and secondary active transport, and passive transport?

  • nickname
  • · Replies 1 ·
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1

Planar Concentration of Nb Atoms in BCC Crystal

  • elcotufa
  • · Replies 1 ·
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1

Lewis structure, hybridization and VSEPR

  • extranice
  • · Replies 1 ·
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1

Which Metal Should Be Used for Nickel Plating?

  • meganw
  • · Replies 1 ·
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1

Chemistry What is the Correct Way to Prepare a 20% NaOH Solution?

  • Rajini
  • · Replies 19 ·
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19

Esimating delta S and delta H from temp and Kb

  • chazgurl4life
  • · Replies 1 ·
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1

Finding ΔH from lnK vs. 1/T slope for CO2 decomposition

  • Coastal
  • · Replies 1 ·
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1

Hess's Law and Thermochemical Equations

  • djfrankym
  • · Replies 1 ·
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1

Heat of Formation for Ammonium chloride

  • twilliams34
  • · Replies 1 ·
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1

How Do You Calculate Thermodynamic Properties for Heated Water?

  • thechamp
  • · Replies 1 ·
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1

Chemistry Which Box Has the Highest Pressure and Density?

  • chemistry4all
  • · Replies 1 ·
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1

How Do You Calculate the Corrosion Rate of an Iron Sample?

  • FaNgS
  • · Replies 1 ·
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1

Finding reaction order for acetone in iodination kinetics

  • crabapple11
  • · Replies 1 ·
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1

Calculating Maximum Crater Diameter for an Asteroid Impact

  • scatterbrain8
  • · Replies 1 ·
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1
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1

Determining mutated, mRNA, Amino Acid sequence

  • sonyab523
  • · Replies 1 ·
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1

Exact formula of tetra-amine-zinc complex

  • hyurnat4
  • · Replies 1 ·
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1

Why does beta-carotene have a higher Rf value than lycopene in TLC?

  • madgab89
  • · Replies 1 ·
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1

Difference between fibrous proteins and globular proteins

  • littlelady
  • · Replies 1 ·
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1

Calculating Heat of NaOH Dissolution in Water

  • WahooMan
  • · Replies 1 ·
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1

Diffusion/osmosis, mitosis, and cellular respiration

  • FlipStyle1308
  • · Replies 1 ·
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1

Net ionic equations (NaOH; HCl; H2O)

  • berry2
  • · Replies 1 ·
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1

Why Does ClNO2 Have Only One Double Bond in Its Lewis Structure?

  • JustinLiang
  • · Replies 1 ·
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1

AP BIO: asexual and sexual reproduction

  • priscilla98
  • · Replies 1 ·
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1

Chemistry Why does CaCO3 dissolve in sodium carbonate solution?

  • samy4408
  • · Replies 7 ·
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7

Chemistry Can Sulphonated Neatsfoot Oil Be Made Using Turkish Red Oil Method?

  • Oyster farmer
  • · Replies 12 ·
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12

Chemistry How to measure the density of a material?

  • EL AALLAOUI Najla
  • · Replies 9 ·
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9