Biology and Chemistry Homework Help Forum

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How do I calculate how well a liquid conducts electricity?

  • j.s.thomas
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1

What do the quantum numbers n, l, and ml actually tell you about electrons?

  • Modernization
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4

Diameter of a planet, known the angular size and distance

  • subopolois
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1

Quick physical chemistry question

  • gman5
  • · Replies 1 ·
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1

Chemistry Photosystems in Plant Cells: Transferring Excited Electron Energy

  • mahela007
  • · Replies 4 ·
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4

Chemistry How much X will react given 3 moles of X and 2.8 moles of Y?

  • triplepie
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2

How to balance chemical equations

  • triplepie
  • · Replies 5 ·
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5

Molality: Moles of Solute/kg of Solvent? Example

  • r_swayze
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2

Price elasticity of demand for popsicles and CDs

  • danny-saf
  • · Replies 3 ·
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3

Why does smaller Kc give higher NO concentration in N₂+O₂ equilibrium?

  • pc2-brazil
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3

Balancing Net Ionic Equation: MnO4- + HSO3- in Acidic Solution

  • renob
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3
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1

Chemical equation; reaction; balancing problem.

  • General_Sax
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3

What Is the Maximum Percent Recovery Using Water for Recrystallization?

  • ChemIsHard
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1

Balancing Net Ionic Equation: Mg + HC2H3O2 --> Mg(C2H3O2)2 + H2

  • francisco
  • · Replies 5 ·
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5

How to Solve Volumetric Flow Balance Problems in Biomedical Engineering

  • sixers786
  • · Replies 3 ·
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3

Chemistry What Is the Molecular Formula of C3H2O with a Molar Mass of 192.8?

  • iwin2000
  • · Replies 17 ·
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17

Ice cube melting in water calorimeter problem

  • calrimetryftl
  • · Replies 4 ·
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4

How to balance a chemical equation correctly

  • triplepie
  • · Replies 3 ·
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3

Comparing basicity of methoxy, hydroxide, ammonia, and acetylide ion

  • catan
  • · Replies 1 ·
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1

Unstated approximation in virial equation example

  • higherme
  • · Replies 4 ·
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4
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5

Help naming organic compounds and drawing structures

  • Anthem26
  • · Replies 1 ·
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1
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1

How much MgO is formed when 10 kg of Mg reacts with 10 kg kg of O2

  • Zhalfirin88
  • · Replies 4 ·
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4

Biology Proteins in Plasma Membrane

  • Swerting
  • · Replies 1 ·
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1

Find Hg Vapor Mass in Grams at 20C Room

  • higherme
  • · Replies 3 ·
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3

Chemistry/The equilibrium number/ I really

  • hedi
  • · Replies 1 ·
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1

Calculating Pressure and Force from He Atoms Colliding with a Wall?

  • higherme
  • · Replies 9 ·
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9

Extracting benzoic acid and aspirin from mixture

  • oceanflavored
  • · Replies 3 ·
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3

Finding excess BaCl2 mass in BaCl2 and Na2SO4 precipitation lab

  • drkoverlord
  • · Replies 2 ·
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2

Calculating the Molar Mass of an Unknown Gas

  • irNewton
  • · Replies 1 ·
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1

Why am I getting 0.0761 M when mixing two solutions?

  • carlodelmundo
  • · Replies 2 ·
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2

Calculate the mass of CO2 produced from the complete combustion

  • Zhalfirin88
  • · Replies 1 ·
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1

How to Balance Redox Reactions in Aqueous Solution

  • downwithsocks
  • · Replies 7 ·
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7

Calculating Mass Percentage of Mg in Mg-Al Alloy

  • Lancelot59
  • · Replies 4 ·
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4

Which Does A Better Job of Rinsing Out A Glass

  • chunkytuna21
  • · Replies 2 ·
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2

Biochemistry pka and pH relationship

  • sharp531
  • · Replies 1 ·
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1
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1

Calculate Mass of 1L Ice @ -2°C: Density x Volume x Temperature

  • Isho
  • · Replies 1 ·
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1

Balancing equation - What is the chemical formula of cement?

  • HOFBrINCl
  • · Replies 3 ·
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3

Photon frequency when electron falls from n = 10 to n = 5 in hydrogen

  • pinklemon
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1
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2

Investigating Combustion of Hydrogen & Boron Compound

  • Gil-H
  • · Replies 2 ·
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2

Why is mitochondria called the powerhouse of the cell?

  • davemattie
  • · Replies 4 ·
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4

Why Is HNO3 Split Up in the Reactants Side?

  • r_swayze
  • · Replies 1 ·
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1
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1

What Is the Correct Name for This Organic Compound?

  • Anthem26
  • · Replies 2 ·
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2
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1

Heat fusion, vaporization and entropy

  • yuuri14
  • · Replies 3 ·
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3

Calculate NaCl Concentration after Dilution

  • neoking77
  • · Replies 1 ·
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1

Biology - Calculating Resolving Power of Microscope?

  • ummyster
  • · Replies 2 ·
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2

Spontaneous Reactions: Forward, Backwards, Both or None?

  • higherme
  • · Replies 2 ·
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2

CHEMISTRY - Calculating Copper Yield from Bornite Ore

  • darthxepher
  • · Replies 3 ·
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3

What is the Net Ionic Equation for Nickel Nitrate and Lithium Sulfide?

  • ccmetz2020
  • · Replies 3 ·
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3

How Much Chromium(III) Oxide Is Needed for 439g of Chromium Sulfide?

  • triplepie
  • · Replies 2 ·
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2

How Much Iron Is Required to Treat Perchloroethene Contamination in Water?

  • hils0005
  • · Replies 1 ·
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1

Chemistry How long should you cut a piece of wire to obtain 0.0141 moles of copper?

  • chels0
  • · Replies 1 ·
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1

Who Pioneered the Study of Glycolysis?

  • TUMZZ
  • · Replies 5 ·
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5

Write the chemical equation for the formation of ozone.

  • yuuri14
  • · Replies 4 ·
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4

Using indicators to determine acids, bases, and salts

  • ctamasi
  • · Replies 3 ·
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3

How do I calculate specific heat capacity in a lab report?

  • soccerLuver
  • · Replies 1 ·
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1

Is Rusting Iron a Physical Change?

  • temaire
  • · Replies 2 ·
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2

Fluoride Ions needed to treat water

  • MellowOne
  • · Replies 2 ·
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2

Identifying unknown organic compounds

  • Shaybay92
  • · Replies 1 ·
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1

Percent by weight of substance in hydrate

  • hairy_grape
  • · Replies 2 ·
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2
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2

Reactivity Series: Iron in Zinc or Copper: Which Rusts Less?

  • DarylMBCP
  • · Replies 1 ·
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1

Can Gas A or B be liquefied and do they have a critical temperature?

  • winterwind
  • · Replies 4 ·
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4

What's the Name of This Iron Equipment in Chemistry?

  • whitehorsey
  • · Replies 6 ·
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6

Calculate Change in Energy for n=4 to n=1 Hydrogen Atom

  • xmflea
  • · Replies 2 ·
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2

The Energy of Radiation from a Carbon-Oxygen Double Bond

  • I'm
  • · Replies 2 ·
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2

Deriving virial coefficients B and C from van der Waals equation

  • winterwind
  • · Replies 1 ·
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1

Region of Spectrum for 5.0x 10^-6 Meters Radiation

  • I'm
  • · Replies 1 ·
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1

Is the chemical used with caution in home and lab, could it be acid?

  • whitehorsey
  • · Replies 2 ·
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2

What Is the Correct Name for This Alkane Structure?

  • deteam
  • · Replies 6 ·
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6

Which Electrode is the Cathode in Wade and Tang's Galvanic Cell?

  • GrandMaster87
  • · Replies 6 ·
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6

Caffeine sublimation and melting point

  • slft
  • · Replies 1 ·
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1

Is NH3(aq) Equal to NH3(l) + H2O(l)?

  • renob
  • · Replies 3 ·
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3
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4

Simple Dilution Problem: Calculating Final Concentration (M)

  • Shafty
  • · Replies 2 ·
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2

Calculate Volume of Diving Bell Air Space at 50m Depth

  • winterwind
  • · Replies 1 ·
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1

How much Ag₂S forms from 19.00g Ag, 0.80g H₂S and 1.600g O₂?

  • tommyjohn
  • · Replies 1 ·
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1

How Does Temperature Affect NO2 Formation in Combustion?

  • Dynamic24
  • · Replies 1 ·
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1

Molarity given percent solution and density.

  • webz
  • · Replies 5 ·
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5

Which Statements About Elements in the Periodic Table are True?

  • Jay J
  • · Replies 7 ·
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7

Calculating Binding Energy for Hydrogen Positron Emission

  • burg25
  • · Replies 2 ·
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2
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2

Calculating Probability of Detinogenesis Imperfecta in Children

  • Anthem26
  • · Replies 3 ·
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3

What is the percent abundance of 140Ce in Cerium?

  • kceddis
  • · Replies 3 ·
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3
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2
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3

Concentrations of conjugate bases at specific pH levels

  • Shafty
  • · Replies 2 ·
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2

Why is hydration enthalpy ignored in MgO formation experiments?

  • semc
  • · Replies 5 ·
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5

Finding oxidation numbers of Mn in five compounds

  • yuuri14
  • · Replies 2 ·
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2
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2

Why are carbon, platinum, and gold inert in electrolysis?

  • kang_an1983
  • · Replies 2 ·
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2

Calculating Mass of Electrons in GRAMS

  • deteam
  • · Replies 9 ·
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9
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1