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
  • Mark44
  • · Replies 0 ·
Replies
0
  • Sticky
Homework Help Guidelines for Students and Helpers
  • vela
  • · Replies 0 ·
Replies
0
Biology Is bioelectricity considered more physics or biology?
  • BeablossomR_
  • · Replies 3 ·
Replies
3
Chemistry Why percent yield is sometimes less than 100% in chemistry experiments?
  • harveycannon
  • · Replies 7 ·
Replies
7
Chemistry Which of the following will decrease CO bond character?
  • palaphys
  • · Replies 1 ·
Replies
1
Chemistry Understanding Reaction Quotient and Molarity
  • njh
  • · Replies 7 ·
Replies
7
Biology Prove that evolution is constant (Provide at least two arguments to support your position)
  • yo yo
  • · Replies 32 ·
2
Replies
32
Confusion regarding a chemical kinetics problem
  • palaphys
  • · Replies 12 ·
Replies
12
Chemistry How to find the pH of a galvanic cell (MIT OCW problem set)
  • zenterix
  • · Replies 2 ·
Replies
2
Chemistry What does this equation for an electrochemical cell mean?
  • zenterix
  • · Replies 4 ·
Replies
4
Chemistry Reacting anisole with concentrated H2SO4
  • tellmesomething
  • · Replies 4 ·
Replies
4
Chemistry Why can we differentiate this entropy total derivative with repect to Temperature?
  • zenterix
  • · Replies 5 ·
Replies
5
Chemistry Work done by heat engine that uses exhaust from heat pump
  • zenterix
  • · Replies 9 ·
Replies
9
How does detergent lysis work and how to use it?
  • addiven
  • · Replies 1 ·
Replies
1
Chemistry Particle model -- Air passing through a Heat Exchanger
  • Jigneshbharati
  • · Replies 20 ·
Replies
20
Chemistry Will this reaction cause an increase or decrease in temperature?
  • ElectroMaster88
  • · Replies 8 ·
Replies
8
Chemistry Calculating total activity from decay of this sample of technetium
  • zenterix
  • · Replies 3 ·
Replies
3
Chemistry How to apply Nernst equation in this problem?
  • zenterix
  • · Replies 3 ·
Replies
3
Chemistry How does this example of electroplating tungsten onto base metal work?
  • zenterix
  • · Replies 5 ·
Replies
5
Chemistry Carbon bonding in graphite
  • laser1
  • · Replies 6 ·
Replies
6
Chemistry How do we interpret the steps in the algorithm to balance a redox equation?
  • zenterix
  • · Replies 7 ·
Replies
7
Chemistry Are there infinite combinations of partial pressures that give the same chemical equilibrium constant?
  • zenterix
  • · Replies 28 ·
Replies
28
Chemistry Understanding chemical potential of gas in mixture versus pure gas, used in derivation of equilibrium constant
  • zenterix
  • · Replies 1 ·
Replies
1
Chemistry "The oxidized species of the couple is very oxidizing". Does this make sense?
  • zenterix
  • · Replies 5 ·
Replies
5
Chemistry How to think about increased temperature effect on water autoprotolysis equilibrium constant?
  • zenterix
  • · Replies 4 ·
Replies
4
Chemistry Comparing methods of computing pH at equivalence point in titration
  • zenterix
  • · Replies 4 ·
Replies
4
Chemistry A seemingly simple titration problem
  • zenterix
  • · Replies 4 ·
Replies
4
Chemistry Why is HCl an Arrhenius acid but hydrogen carbonate isn't?
  • zenterix
  • · Replies 4 ·
Replies
4
Chemistry How to calculate pH at equivalence point using this alternative?
  • zenterix
  • · Replies 7 ·
Replies
7
Chemistry Is pH of strong acid strong base titration always 7 at stoichiometric point?
  • zenterix
  • · Replies 2 ·
Replies
2
Chemistry Book seems to say that we can have weak acid and weak conjugate base
  • zenterix
  • · Replies 2 ·
Replies
2
Chemistry How to take into account autoprotolysis in weak base solution?
  • zenterix
  • · Replies 8 ·
Replies
8
Chemistry Are there typos in this snippet causing confusion?
  • zenterix
  • · Replies 2 ·
Replies
2
Chemistry Understanding how to calculate pH of a buffer solution
  • zenterix
  • · Replies 2 ·
Replies
2
Chemistry How does Bronsted-Lowry definition of base apply to NaOH exactly?
  • zenterix
  • · Replies 5 ·
Replies
5
Chemistry Equilibrium Constant and Gibbs Energy
  • laser1
  • · Replies 4 ·
Replies
4
Chemistry Why is the activity of water as a solvent very nearly 1?
  • zenterix
  • · Replies 3 ·
Replies
3
Chemistry Understanding derivation of Clausius-Clapeyron equation
  • zenterix
  • · Replies 2 ·
Replies
2
Chemistry A calculation of enthalpy, entropy, and Gibbs energy of vaporization
  • zenterix
  • · Replies 1 ·
Replies
1
Chemistry How to understand this acidic oxide chemical reaction?
  • zenterix
  • · Replies 3 ·
Replies
3
Chemistry For irreversible process from state 1 to 2, why can the system not be isolated for reversible process from 1 to 2?
  • zenterix
  • · Replies 2 ·
Replies
2
Chemistry A calculation of equilibrium constant of a reaction of phosgene
  • zenterix
  • · Replies 7 ·
Replies
7
Chemistry How to reason about Gibbs energy change due to entropy not enthalpy?
  • zenterix
  • · Replies 4 ·
Replies
4
Chemistry Buffer solutions and electrophoresis in seperating amino acids
  • Saba
  • · Replies 3 ·
Replies
3
Chemistry Elimination question on alkyl halide
  • Zayan
  • · Replies 0 ·
Replies
0
Chemistry Calculation of molar conductance at infinite dilution
  • Zayan
  • · Replies 8 ·
Replies
8
Chemistry How to understand the zeroth law through these specific equations?
  • zenterix
  • · Replies 3 ·
Replies
3
Chemistry How to understand the energy involved in mass transfer into an open system?
  • zenterix
  • · Replies 0 ·
Replies
0
Chemistry What does the differential of U mean in an irreversible process?
  • zenterix
  • · Replies 11 ·
Replies
11
Chemistry What is "gauge pressure" and how does a manometer work?
  • zenterix
  • · Replies 1 ·
Replies
1
[Organic Chemistry 1:College] Predict Major Product
  • NY152
  • · Replies 7 ·
Replies
7
Is E1 or E2 the Correct Mechanism for Bulky Base Eliminations?
  • Zayan
  • · Replies 3 ·
Replies
3
Chemistry How does it work to mix two gases reversibly in this device?
  • zenterix
  • · Replies 1 ·
Replies
1
Chemistry Entropy in isolated composite system for irreversible process
  • zenterix
  • · Replies 3 ·
Replies
3
Chemistry How to determine whether a single reaction is better than multi-stage reaction?
  • zenterix
  • · Replies 2 ·
Replies
2
Chemistry How to explain the difference between recompression of ideal gas reversibly and irreversibly after initial irreversible expansion?
  • zenterix
  • · Replies 5 ·
Replies
5
Chemistry How to integrate a sum of two entropy differentials?
  • zenterix
  • · Replies 4 ·
Replies
4
Chemistry Understanding the calculation of enthalpy of the formation of benzene
  • zenterix
  • · Replies 3 ·
Replies
3
Chemistry Calculation of bond energy of oxygen gas at 0K
  • zenterix
  • · Replies 2 ·
Replies
2
Chemistry How do we use enthalpy of formation in this calculation?
  • zenterix
  • · Replies 9 ·
Replies
9
Chemistry Oxidation of alkene followed by Cu, heat
  • Sat-P
  • · Replies 1 ·
Replies
1
Ag mass number 108+1 neutron (mass number 1) = Beta -1
  • Joseph Palumbo
  • · Replies 3 ·
Replies
3
Would arrow pushing explain the mechanism of these oxide reactions?
  • adf89812
  • · Replies 1 ·
Replies
1
Chemistry To determine variables in adiabatic reversible process do we need to look up heat capacity?
  • zenterix
  • · Replies 1 ·
Replies
1
Chemistry Calculation of thermodynamic variables for irreversible adiabatic process of ideal gas
  • zenterix
  • · Replies 9 ·
Replies
9
Chemistry Ionisation enthalpy of d block elements
  • bharathikaruppusamy1
  • · Replies 0 ·
Replies
0
Chemistry Is the differential of heat in a reversible process in an isolated system equal to zero?
  • zenterix
  • · Replies 10 ·
Replies
10
Chemistry How to reverse the process of rubbing two stones in water?
  • zenterix
  • · Replies 5 ·
Replies
5
Chemistry Does Combusting Different Amounts of Propane Change Final Temperature?
  • zenterix
  • · Replies 5 ·
Replies
5
Chemistry A few questions on an irreversible adiabatic expansion of an ideal gas
  • zenterix
  • · Replies 1 ·
Replies
1
Chemistry How to derive 2nd law extremum principles for U, A, G, and H?
  • zenterix
  • · Replies 1 ·
Replies
1
Chemistry Derivations in adiabatic process for ideal gas with C_V and C_P
  • zenterix
  • · Replies 1 ·
Replies
1
Chemistry No heat exchange with the surroundings in an irreversible expansion of an ideal gas?
  • zenterix
  • · Replies 4 ·
Replies
4
Chemistry Show that book levitation by absorption of heat violates 2nd law
  • zenterix
  • · Replies 13 ·
Replies
13
Chemistry Understanding thermodynamics of a stretched rubber band
  • zenterix
  • · Replies 2 ·
Replies
2
Shielding or principal quantum number predicts Covalent or Ionic?
  • adf89812
  • · Replies 0 ·
Replies
0
Chemistry Two approaches to calculating entropy differ by factor of two. Why?
  • zenterix
  • · Replies 3 ·
Replies
3
How can I identify the molecular fomula, based on an m/z of 350.7897?
  • bellum
  • · Replies 4 ·
Replies
4
Chemistry High School idea - Fermentation
  • Arsh119
  • · Replies 4 ·
Replies
4
Chemistry The effect of saturated & unsaturated fats' chemical structures on LDL
  • Saba
  • · Replies 2 ·
Replies
2
Chemistry Compounds undergoing Friedel-Crafts alkylation
  • jolly_math
  • · Replies 3 ·
Replies
3
Chemistry Synthesis of Caffeine from Theobromine
  • Lachlan
  • · Replies 2 ·
Replies
2
Chemistry Why Does Fe(H2O)₆³⁺ Appear Brown Instead of Yellow in Water?
  • sdfsfasdfasf
  • · Replies 4 ·
Replies
4
Chemistry Need help with Ideal Gas Question
  • jojosg
  • · Replies 6 ·
Replies
6
Biology The cell bodies of which of the neurons are present in the spinal cord
  • Darshit Sharma
  • · Replies 6 ·
Replies
6
Chemistry Ester to acid chloride transformation
  • jolly_math
  • · Replies 4 ·
Replies
4
Chemistry Help please with this chemistry molar calculation
  • TheePhysicsStudent
  • · Replies 4 ·
Replies
4
Chemistry Concentration of Phosphorus from KH2PHO4
  • AxisCat
  • · Replies 4 ·
Replies
4
How Do You Calculate the Moles of H₂SO₄ Needed for a Reaction?
  • Adheesha
  • · Replies 9 ·
Replies
9
Chemistry Graph of several thermodynamic processes
  • tellmesomething
  • · Replies 8 ·
Replies
8
Chemistry All possible resonance structures for SO4 2-
  • Faelyn
  • · Replies 9 ·
Replies
9
Chemistry Where Did I Go Wrong in My Gas Law Calculation?
  • aboredperson
  • · Replies 2 ·
Replies
2
Chemistry Why Should the Mole Ratio in Alkaline Buffers Be 5:1 Base to Acid?
  • stunner5000pt
  • · Replies 3 ·
Replies
3
Biology What Is the Hair Color of Offspring When Both Parents Have Dominant Alleles?
  • stunner5000pt
  • · Replies 13 ·
Replies
13
Chemistry Calculating HCl Concentration in Solution
  • Skw
  • · Replies 13 ·
Replies
13
Fossil Dating for the anthropology department
  • Hopper_18
  • · Replies 6 ·
Replies
6
Chemistry Choosing principal chain in the nomenclature of organic compounds
  • arham_jain_hsr
  • · Replies 3 ·
Replies
3
QLD - Year 12 Chemistry Unit 3 and 4, IA2 student experiment suggestions please
  • k1_k1
  • · Replies 3 ·
Replies
3
Chemistry Why Do Sulfurous Compounds Show Different Peaks in X-ray Absorption Spectra?
  • feelice
  • · Replies 1 ·
Replies
1
Chemistry How to Determine the Oxidation Number of Fe in FeCO3?
  • luanadoesnotlike
  • · Replies 2 ·
Replies
2
Biology Is a smeared band on a Western Blot a valid result?
  • Sunwoo Bae
  • · Replies 0 ·
Replies
0
Chemistry Why is the third hydrogen attached to P instead of O in phosphorus acid?
  • guv
  • · Replies 7 ·
Replies
7