Biology and Chemistry Homework Help Forum

Post thread
Free Biology, Chemistry, Geology homework help via qualified mentors. Please use the template when requesting help and show your work. Gain understanding today!
  • Sticky
Hey I posted in homework help but now it's gone
  • · Replies 0 ·
Replies
0
Views
15K
  • Sticky
Homework Help Guidelines for Students and Helpers
  • · Replies 0 ·
Replies
0
Views
17K
Biology Prove that evolution is constant (Provide at least two arguments to support your position)
  • · Replies 31 ·
2
Replies
31
Views
9K
Confusion regarding a chemical kinetics problem
  • · Replies 12 ·
Replies
12
Views
3K
Chemistry How to find the pH of a galvanic cell (MIT OCW problem set)
  • · Replies 2 ·
Replies
2
Views
3K
Chemistry What does this equation for an electrochemical cell mean?
  • · Replies 4 ·
Replies
4
Views
1K
Chemistry Reacting anisole with concentrated H2SO4
  • · Replies 4 ·
Replies
4
Views
3K
Chemistry Why can we differentiate this entropy total derivative with repect to Temperature?
  • · Replies 5 ·
Replies
5
Views
4K
Chemistry Work done by heat engine that uses exhaust from heat pump
  • · Replies 9 ·
Replies
9
Views
3K
How does detergent lysis work and how to use it?
  • · Replies 1 ·
Replies
1
Views
1K
Chemistry Particle model -- Air passing through a Heat Exchanger
  • · Replies 20 ·
Replies
20
Views
2K
Chemistry Will this reaction cause an increase or decrease in temperature?
  • · Replies 8 ·
Replies
8
Views
2K
Chemistry Calculating total activity from decay of this sample of technetium
  • · Replies 3 ·
Replies
3
Views
2K
Chemistry How to apply Nernst equation in this problem?
  • · Replies 3 ·
Replies
3
Views
2K
Chemistry How does this example of electroplating tungsten onto base metal work?
  • · Replies 5 ·
Replies
5
Views
1K
Chemistry Carbon bonding in graphite
  • · Replies 6 ·
Replies
6
Views
2K
Chemistry How do we interpret the steps in the algorithm to balance a redox equation?
  • · Replies 7 ·
Replies
7
Views
2K
Chemistry Are there infinite combinations of partial pressures that give the same chemical equilibrium constant?
  • · Replies 28 ·
Replies
28
Views
2K
Chemistry Understanding chemical potential of gas in mixture versus pure gas, used in derivation of equilibrium constant
  • · Replies 1 ·
Replies
1
Views
1K
Chemistry "The oxidized species of the couple is very oxidizing". Does this make sense?
  • · Replies 5 ·
Replies
5
Views
1K
Chemistry How to think about increased temperature effect on water autoprotolysis equilibrium constant?
  • · Replies 4 ·
Replies
4
Views
1K
Chemistry Comparing methods of computing pH at equivalence point in titration
  • · Replies 4 ·
Replies
4
Views
1K
Chemistry A seemingly simple titration problem
  • · Replies 4 ·
Replies
4
Views
1K
Chemistry Why is HCl an Arrhenius acid but hydrogen carbonate isn't?
  • · Replies 4 ·
Replies
4
Views
1K
Chemistry How to calculate pH at equivalence point using this alternative?
  • · Replies 7 ·
Replies
7
Views
1K
Chemistry Is pH of strong acid strong base titration always 7 at stoichiometric point?
  • · Replies 2 ·
Replies
2
Views
1K
Chemistry Book seems to say that we can have weak acid and weak conjugate base
  • · Replies 2 ·
Replies
2
Views
1K
Chemistry How to take into account autoprotolysis in weak base solution?
  • · Replies 8 ·
Replies
8
Views
2K
Chemistry Are there typos in this snippet causing confusion?
  • · Replies 2 ·
Replies
2
Views
1K
Chemistry Understanding how to calculate pH of a buffer solution
  • · Replies 2 ·
Replies
2
Views
1K
Chemistry How does Bronsted-Lowry definition of base apply to NaOH exactly?
  • · Replies 5 ·
Replies
5
Views
2K
Chemistry Equilibrium Constant and Gibbs Energy
  • · Replies 4 ·
Replies
4
Views
2K
Chemistry Why is the activity of water as a solvent very nearly 1?
  • · Replies 3 ·
Replies
3
Views
2K
Chemistry Understanding derivation of Clausius-Clapeyron equation
  • · Replies 2 ·
Replies
2
Views
2K
Chemistry A calculation of enthalpy, entropy, and Gibbs energy of vaporization
  • · Replies 1 ·
Replies
1
Views
2K
Chemistry How to understand this acidic oxide chemical reaction?
  • · Replies 3 ·
Replies
3
Views
1K
Chemistry For irreversible process from state 1 to 2, why can the system not be isolated for reversible process from 1 to 2?
  • · Replies 2 ·
Replies
2
Views
2K
Chemistry A calculation of equilibrium constant of a reaction of phosgene
  • · Replies 7 ·
Replies
7
Views
2K
Chemistry How to reason about Gibbs energy change due to entropy not enthalpy?
  • · Replies 4 ·
Replies
4
Views
2K
Chemistry Buffer solutions and electrophoresis in seperating amino acids
  • · Replies 3 ·
Replies
3
Views
2K
Chemistry Elimination question on alkyl halide
  • · Replies 0 ·
Replies
0
Views
2K
Chemistry Calculation of molar conductance at infinite dilution
  • · Replies 8 ·
Replies
8
Views
2K
Chemistry How to understand the zeroth law through these specific equations?
  • · Replies 3 ·
Replies
3
Views
2K
Chemistry How to understand the energy involved in mass transfer into an open system?
  • · Replies 0 ·
Replies
0
Views
2K
Chemistry What does the differential of U mean in an irreversible process?
  • · Replies 11 ·
Replies
11
Views
2K
Chemistry What is "gauge pressure" and how does a manometer work?
  • · Replies 1 ·
Replies
1
Views
2K
[Organic Chemistry 1:College] Predict Major Product
  • · Replies 7 ·
Replies
7
Views
4K
Is E1 or E2 the Correct Mechanism for Bulky Base Eliminations?
  • · Replies 3 ·
Replies
3
Views
2K
Chemistry How does it work to mix two gases reversibly in this device?
  • · Replies 1 ·
Replies
1
Views
2K
Chemistry Entropy in isolated composite system for irreversible process
  • · Replies 3 ·
Replies
3
Views
2K
Chemistry How to determine whether a single reaction is better than multi-stage reaction?
  • · Replies 2 ·
Replies
2
Views
2K
Chemistry How to explain the difference between recompression of ideal gas reversibly and irreversibly after initial irreversible expansion?
  • · Replies 5 ·
Replies
5
Views
2K
Chemistry How to integrate a sum of two entropy differentials?
  • · Replies 4 ·
Replies
4
Views
2K
Chemistry Understanding the calculation of enthalpy of the formation of benzene
  • · Replies 3 ·
Replies
3
Views
3K
Chemistry Calculation of bond energy of oxygen gas at 0K
  • · Replies 2 ·
Replies
2
Views
2K
Chemistry How do we use enthalpy of formation in this calculation?
  • · Replies 9 ·
Replies
9
Views
2K
Chemistry Oxidation of alkene followed by Cu, heat
  • · Replies 1 ·
Replies
1
Views
2K
Ag mass number 108+1 neutron (mass number 1) = Beta -1
  • · Replies 3 ·
Replies
3
Views
2K
Would arrow pushing explain the mechanism of these oxide reactions?
  • · Replies 1 ·
Replies
1
Views
2K
Chemistry To determine variables in adiabatic reversible process do we need to look up heat capacity?
  • · Replies 1 ·
Replies
1
Views
2K
Chemistry Calculation of thermodynamic variables for irreversible adiabatic process of ideal gas
  • · Replies 9 ·
Replies
9
Views
2K
Chemistry Ionisation enthalpy of d block elements
  • · Replies 0 ·
Replies
0
Views
2K
Chemistry Is the differential of heat in a reversible process in an isolated system equal to zero?
  • · Replies 10 ·
Replies
10
Views
3K
Chemistry How to reverse the process of rubbing two stones in water?
  • · Replies 5 ·
Replies
5
Views
2K
Chemistry Does Combusting Different Amounts of Propane Change Final Temperature?
  • · Replies 5 ·
Replies
5
Views
2K
Chemistry A few questions on an irreversible adiabatic expansion of an ideal gas
  • · Replies 1 ·
Replies
1
Views
2K
Chemistry How to derive 2nd law extremum principles for U, A, G, and H?
  • · Replies 1 ·
Replies
1
Views
2K
Chemistry Derivations in adiabatic process for ideal gas with C_V and C_P
  • · Replies 1 ·
Replies
1
Views
2K
Chemistry No heat exchange with the surroundings in an irreversible expansion of an ideal gas?
  • · Replies 4 ·
Replies
4
Views
2K
Chemistry Show that book levitation by absorption of heat violates 2nd law
  • · Replies 13 ·
Replies
13
Views
2K
Chemistry Understanding thermodynamics of a stretched rubber band
  • · Replies 2 ·
Replies
2
Views
2K
Shielding or principal quantum number predicts Covalent or Ionic?
  • · Replies 0 ·
Replies
0
Views
2K
Chemistry Two approaches to calculating entropy differ by factor of two. Why?
  • · Replies 3 ·
Replies
3
Views
2K
How can I identify the molecular fomula, based on an m/z of 350.7897?
  • · Replies 4 ·
Replies
4
Views
2K
Chemistry High School idea - Fermentation
  • · Replies 4 ·
Replies
4
Views
2K
Chemistry The effect of saturated & unsaturated fats' chemical structures on LDL
  • · Replies 2 ·
Replies
2
Views
2K
Chemistry Compounds undergoing Friedel-Crafts alkylation
  • · Replies 3 ·
Replies
3
Views
2K
Chemistry Synthesis of Caffeine from Theobromine
  • · Replies 2 ·
Replies
2
Views
2K
Chemistry Why Does Fe(H2O)₆³⁺ Appear Brown Instead of Yellow in Water?
  • · Replies 4 ·
Replies
4
Views
3K
Chemistry Need help with Ideal Gas Question
  • · Replies 6 ·
Replies
6
Views
3K
Biology The cell bodies of which of the neurons are present in the spinal cord
  • · Replies 6 ·
Replies
6
Views
2K
Chemistry Ester to acid chloride transformation
  • · Replies 4 ·
Replies
4
Views
2K
Chemistry Help please with this chemistry molar calculation
  • · Replies 4 ·
Replies
4
Views
3K
Chemistry Concentration of Phosphorus from KH2PHO4
  • · Replies 4 ·
Replies
4
Views
2K
How Do You Calculate the Moles of H₂SO₄ Needed for a Reaction?
  • · Replies 9 ·
Replies
9
Views
2K
Chemistry Graph of several thermodynamic processes
  • · Replies 8 ·
Replies
8
Views
3K
Chemistry All possible resonance structures for SO4 2-
  • · Replies 9 ·
Replies
9
Views
8K
Chemistry Where Did I Go Wrong in My Gas Law Calculation?
  • · Replies 2 ·
Replies
2
Views
2K
Chemistry Why Should the Mole Ratio in Alkaline Buffers Be 5:1 Base to Acid?
  • · Replies 3 ·
Replies
3
Views
3K
Biology What Is the Hair Color of Offspring When Both Parents Have Dominant Alleles?
  • · Replies 13 ·
Replies
13
Views
3K
Chemistry Calculating HCl Concentration in Solution
  • · Replies 13 ·
Replies
13
Views
4K
Fossil Dating for the anthropology department
  • · Replies 6 ·
Replies
6
Views
4K
Chemistry Choosing principal chain in the nomenclature of organic compounds
  • · Replies 3 ·
Replies
3
Views
2K
QLD - Year 12 Chemistry Unit 3 and 4, IA2 student experiment suggestions please
  • · Replies 3 ·
Replies
3
Views
3K
Chemistry Why Do Sulfurous Compounds Show Different Peaks in X-ray Absorption Spectra?
  • · Replies 1 ·
Replies
1
Views
2K
Chemistry How to Determine the Oxidation Number of Fe in FeCO3?
  • · Replies 2 ·
Replies
2
Views
4K
Biology Is a smeared band on a Western Blot a valid result?
  • · Replies 0 ·
Replies
0
Views
3K
Chemistry Why is the third hydrogen attached to P instead of O in phosphorus acid?
  • · Replies 7 ·
Replies
7
Views
3K
Biology Equations governing cavitation, flow speed, and delta vapor pressure...
  • · Replies 22 ·
Replies
22
Views
3K
How does a Gas Chromatograph-Mass Spectrometer detect quantities?
  • · Replies 4 ·
Replies
4
Views
3K
Chemistry A confusion about conductance of weak electrolytes
  • · Replies 6 ·
Replies
6
Views
3K
Chemistry How Does Doubling Zinc Mass Affect Temperature Change in ZnO Formation?
  • · Replies 3 ·
Replies
3
Views
3K