Biology and Chemistry Homework Help Forum

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3

Thermal decomposition of calcium carbonate - problem

  • wuutoshi
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4
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Calculate Mass of Butane & CO2 for 1.5x10^3 kJ Heat

  • FLgirl
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14

What is the Thickness of the Upper Layer?

  • hopelesss
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10

Why Do Bases Release All Hydroxides Simultaneously?

  • fire9132
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3

Need Help With Isoelectronic Point pI Equation

  • Pruddy
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Confirming structure of aspartic acid at PH 4

  • n.a.s.h
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1

Comparing Kinetic Energy of N2 and CO2 Molecules at Ambient Conditions

  • chemistry1
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4

Entropy Calculation in Thermodynamics Homework

  • ruiwp13
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1

Solving Chemistry Enthalpy Homework: Step-by-Step Guide

  • laurenM
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5

Advantage/Purpose of Transmission vs Absorbance in calibration curve

  • ~christina~
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6

Why is the Enthalpy of the NO2 to N2O4 Reaction Exothermic?

  • Qube
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Cell Potential with Nernst Equation

  • davev
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2

Calculating Activation Energy of Crystal Violet/NaOH Reaction

  • kevinnn
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3

Naming Cycloalkanes Homework: Confused on Answer

  • cathy
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Why do we *subtract* enthelpy of lattice formation?

  • aleksbooker
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2

Calculation of ΔH for Ideal Gas Processes

  • ruiwp13
  • · Replies 11 ·
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11

Quantum Chemistry Eigenfunction

  • Gerardum
  • · Replies 9 ·
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9

Chemistry Find pH of 0.20 M Iron (III) Sulfate

  • Qube
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3

What Is the Heat Capacity at Constant Pressure for an Ideal Gas?

  • k3r0
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2

Why can't this process run forever?

  • get_physical
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4

Thermodynamics Enthelpy of water

  • ruiwp13
  • · Replies 6 ·
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6
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5

Isotope fractionation with condensation

  • Puchinita5
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Combustion Reactions: C5H12 + O2 - Steps & Oxidation States

  • vanceEE
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6

Find the Molar Mass of A: A + B + Energy = C | 35.5g A, 750kJ Heat Released

  • Speedking96
  • · Replies 1 ·
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1

Formation of hydrates from ionic compounds

  • Qube
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1

Solving Charge Balance for 1 M CaCl_{2}

  • Qube
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Chemistry Problem: Solving with Molar Mass & Isotope Abundance

  • cpatel23
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2

What is the Standard State of Carbon?

  • PVnRT81
  • · Replies 1 ·
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Question on populations and communities

  • dioprem
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8

What is the Favorable Orientation of an H2O Molecule Near an Anion?

  • Danicathea
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7
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2

Balmer Series and Atomic Absorbtion/Emission

  • ThomasMagnus
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1

Me With An Electrochemical Cell and Equivalence.

  • kokoman
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1

Computation of 2nd and 3rd Virial Coefficients

  • amattiol
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4

Rate Constant Problem: Find n & Rate Constant

  • grint
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1

Percent Dissociation of Acetic Acid

  • Teemo
  • · Replies 7 ·
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7

Chemical Kinetics: determining order of reaction

  • BrettJimison
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3

Conversions & ppb - Arsenate in Drinking Water

  • uestions
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2

Can Acid-Base Reactions Occur in the Solid State?

  • Qube
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10

Calculate Temp Increase for Enthalpy of Sulfur Burning in Excess O2

  • MathewsMD
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Help with 2 gen chem questions please

  • amar314
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What is the pH when 200 mL 0.1 M NaOH is mixed with 300 mL water?

  • kal854
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4

Difficult Dissolution/Neutralization Question

  • PVnRT81
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3

How do you calculate density of a vapor only vapor pressure and temp.

  • aleksbooker
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2

Hybridization Question: Image Explained

  • cathy
  • · Replies 2 ·
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2

Expression for volume as a function of pressure

  • chickymd
  • · Replies 14 ·
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14

How Do You Calculate Heat and Enthalpy in an Ice Melting Lab?

  • psav5
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1

Rate of Ammonia Prod. in N2+3H2 Reaction

  • ThatDude
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1

How is NaOH considered a strong base does it even accept protons?

  • mcfaker
  • · Replies 10 ·
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10

Question regarding change in enthelpy

  • Marshillboy
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Why Does Electrical Purification of Copper Involve Both Oxidation and Reduction?

  • ImmortalDeath
  • · Replies 3 ·
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3

How much air does Sarah inhale while running?

  • Speedking96
  • · Replies 11 ·
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11

Redox reactions oxidation number method

  • Coco12
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6

How Do I Calculate the Mass Proportion of Oxygen in the Air for This Reaction?

  • marellasunny
  • · Replies 2 ·
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Calculating Molar Heat of Neutralization

  • PVnRT81
  • · Replies 10 ·
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10

How Much Nitrogen Gas Escapes from a Compressed Cylinder?

  • MathewsMD
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2
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Biology DNA Sequence for Anti-Sense Strand of CCUAGGCUA mRNA Molecule

  • Coco12
  • · Replies 5 ·
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5

Stoichiometry-calculation of mass fraction of water in exhaust

  • marellasunny
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How Does Deposition Affect State Change and Heat Release?

  • Speedking96
  • · Replies 5 ·
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5

Help with statistical technique for research

  • Ilikecereal
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Are Van der Waals Forces Stronger in Air or Water?

  • engineerings
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2

Kb: NH3+H2O<=>NH4++OH-: Why Omit H2O?

  • alingy1
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4

How does diazomethane react with a diketone?

  • 1/2"
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2

What Is the Resulting pH of Mixing These Solutions?

  • Qube
  • · Replies 4 ·
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Solubility Product, finding molar concentration

  • Ace.
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3

PH for this Weak Acid-Strong Base titration.

  • Ace.
  • · Replies 7 ·
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7

Liquidity & Leverage Problem (With solution included.) (This may be

  • s3a
  • · Replies 2 ·
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Differences with some English words

  • shahrzad1994
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3

Acid-Base low concentration of weak acid

  • alingy1
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1

Does the volume of water change after a neutralization reaction ?

  • B4ssHunter
  • · Replies 12 ·
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12

Help identifying unknown chemicals.

  • Bhajack
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3

Steady State Approximation and Reaction Mechanisms

  • Gorby
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2

Chemical Kinetics Homework: Ineq., Mass & English

  • haha1234
  • · Replies 1 ·
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1

Solubility of Metal Hydroxide in Solutions

  • Qube
  • · Replies 11 ·
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11

Which one could be the three confounding variables?

  • yasmin21
  • · Replies 3 ·
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3

3. concentration of sodium sulphate in the resultant solution?

  • DavidQT
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1

How Do the Strengths of Acids HA and HIN Compare?

  • Qube
  • · Replies 7 ·
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7

How to Determine Moles of Product at Equilibrium in a Gas Reaction?

  • Qube
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5

Equilibrium of a gas mixture from partial pressures

  • RB211
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4
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3

Calculating pH of Mixture of 0.1 M Na2S and 0.05 M HCl

  • Qube
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Does Work Depend on the Displacement of an Object?

  • cp255
  • · Replies 6 ·
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6

PChem: Calculating pH with Na2HPO4 and NaH2PO4*7H2O

  • Jormungandr
  • · Replies 12 ·
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12

Calculating rate constant from a set of data?

  • SeaNanners
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1

Why Were Strontium Salts Excluded from Flame Tests?

  • McSpongy
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1

GPC - Polymer solvent compatibility

  • Oakwater
  • · Replies 1 ·
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1

Chemistry: Methane - Oxygen Combustion Problem - Help needed please.

  • kokoman
  • · Replies 1 ·
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Organic Chemistry - Alcohol Synthesis Problem

  • tsaitea
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Chemistry: Ksp calculation confusion

  • UselessLadder
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2
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2

Solving Reaction Mechanisms: A "For Dummies" Explanation

  • Qube
  • · Replies 4 ·
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4

Physical Chemistry- Rates and Kinetics

  • chanderjeet
  • · Replies 8 ·
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Shift Equlibrium Concentrations Curves w/o Adding Stress

  • tsaitea
  • · Replies 5 ·
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Calculate Heat of Combustion of C2H2

  • Qube
  • · Replies 1 ·
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Pressure at 1000°C for NH₄NO₃ Explosion in 0.80dm³

  • Fishingaxe
  • · Replies 6 ·
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Is Sodium Metal the Reducing Agent in Its Reaction with Water?

  • Qube
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