Bill Phawn 2C wrote:Where can I find the old tests?
if you know anyone who has lavelle's course reader, there should be old tests included in it
Search found 29 matches
- Sat Mar 17, 2018 11:17 pm
- Forum: Student Social/Study Group
- Topic: Final Review Time Tips
- Replies: 5
- Views: 955
Re: Final Review Time Tips
if you know anyone who has lavelle's course reader, there should be old tests included in it
- Sat Mar 17, 2018 11:11 pm
- Forum: General Rate Laws
- Topic: Units
- Replies: 11
- Views: 1489
Re: Units
i think it helps to just be consistent with the problem! i notice that i sometimes get lost along the way when i don't convert and forget what to cancel out
- Sat Mar 17, 2018 11:05 pm
- Forum: *Electrophiles
- Topic: what is going to be on the final? [ENDORSED]
- Replies: 12
- Views: 2744
Re: what is going to be on the final? [ENDORSED]
Matthew 1C wrote:Joyce Gu 1E wrote:where can i find this practice final?
search red panda and you'll find it!
oh riiight.. thanks so much!
- Sat Mar 17, 2018 11:01 pm
- Forum: *Electrophiles
- Topic: what is going to be on the final? [ENDORSED]
- Replies: 12
- Views: 2744
Re: what is going to be on the final? [ENDORSED]
where can i find this practice final?
- Sat Mar 17, 2018 10:42 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: Transition State
- Replies: 3
- Views: 631
Re: Transition State
the transition state is the point where there is a maximum value of activation energy, so it should always be the peak
- Sat Mar 17, 2018 10:05 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: Concept of Second Law of Thermodynamics
- Replies: 6
- Views: 969
Re: Concept of Second Law of Thermodynamics
In any cyclic process, the entropy will either increase or remain the same
Re: Final
i would try to remember the halogens (fluorine, chlorine, bromine, iodine, and astatine) as well, just in case
- Sat Mar 17, 2018 9:15 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Heat capacity of liquid
- Replies: 1
- Views: 520
Re: Heat capacity of liquid
i wondered the same thing, and this helped me understand better: https://www.physicsforums.com/threads/s ... st.131151/
- Sat Mar 17, 2018 8:50 pm
- Forum: General Rate Laws
- Topic: general calc
- Replies: 1
- Views: 532
Re: general calc
it depends on what kind of calculator you use, i use this function on my calculator
- Sat Mar 17, 2018 8:37 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Catalyst and Intermediate
- Replies: 5
- Views: 792
Re: Catalyst and Intermediate
yes, they can show up in the same reaction, but just don't show up in the end product
- Sat Mar 17, 2018 8:29 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Problem
- Replies: 1
- Views: 369
Re: Problem
i dont think so, because the forward and reverse reactions are just the reactants and products and we're usually given both
- Sat Mar 17, 2018 8:25 pm
- Forum: Calculating Work of Expansion
- Topic: irreversible reactions
- Replies: 4
- Views: 705
Re: irreversible reactions
A reversible process is at equilibrium and energy can move back and forth. An irreversible system is a process that cannot be reversed by an infinitesimal change in a variable.
- Sat Mar 17, 2018 8:20 pm
- Forum: Calculating Work of Expansion
- Topic: work done on and by the system
- Replies: 12
- Views: 1433
Re: work done on and by the system
Bansi Amin 1D wrote:When given a word problem, how can we tell that work is being done on the system or by the system?
Work to system --> -w
Work from system --> +w
- Sat Mar 17, 2018 7:55 pm
- Forum: Phase Changes & Related Calculations
- Topic: Steam
- Replies: 7
- Views: 1238
Re: Steam
So water in liquid form boils, and at 100 degrees celsius (boiling point), it turns to steam. The steam can then continue to be heated.
- Sat Mar 17, 2018 7:29 pm
- Forum: *Alcohols
- Topic: study tips
- Replies: 3
- Views: 1935
Re: study tips
not mnemonic devices but this may help? https://www.youtube.com/watch?v=WCm3oIzfdo8
- Sat Mar 17, 2018 7:21 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Rate Constants and Temperature
- Replies: 3
- Views: 617
Re: Rate Constants and Temperature
yes, the Arrhenius equation (k = A exp( -EA/RT )
- Sat Mar 17, 2018 7:15 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Increasing Concentration of Reactants
- Replies: 5
- Views: 772
Re: Increasing Concentration of Reactants
yes, because the frequency of collisions between the two reactants will increase if the concentration increases
- Sat Mar 17, 2018 7:10 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: delta g equilibrium
- Replies: 2
- Views: 512
Re: delta g equilibrium
Yes, because ΔG = ΔG° + RTln(Q). If ΔG = 0, 0 = ΔG° + RTln(Q), ΔG° = -RTln(Q) = -RTln(K), Q=K means at equilibrium
- Sat Mar 17, 2018 6:59 pm
- Forum: Phase Changes & Related Calculations
- Topic: Endothermic or Exothermic
- Replies: 20
- Views: 2077
Re: Endothermic or Exothermic
condensation is an exothermic process because the water vapor molecules lose energy as heat
- Sat Mar 17, 2018 6:55 pm
- Forum: Phase Changes & Related Calculations
- Topic: Constant Volume
- Replies: 3
- Views: 508
Re: Constant Volume
yes, because is possible to do work on a system without changing the volume
- Sat Mar 17, 2018 6:39 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Standard Enthalpy of combustion
- Replies: 2
- Views: 549
Re: Standard Enthalpy of combustion
Yes, because ice melts at 0 degrees Celsius!
- Sat Mar 17, 2018 6:32 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Is enthalpy a state function?
- Replies: 12
- Views: 2261
Re: Is enthalpy a state function?
Yes, enthalpy is a state function
- Sat Mar 17, 2018 6:12 pm
- Forum: Balancing Redox Reactions
- Topic: Adding OH
- Replies: 6
- Views: 1002
Adding OH
When balancing redox reactions, how do you know when to add OH?
- Sat Mar 17, 2018 5:49 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Rate Constant [ENDORSED]
- Replies: 2
- Views: 576
Rate Constant [ENDORSED]
When looking at a reaction graph, how do you determine the greatest rate constant?
- Sat Mar 17, 2018 5:48 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Reaction Graphs
- Replies: 3
- Views: 590
Reaction Graphs
When looking at a reaction graph, how do you determine which reactants have the smallest/greatest rate in the forward/reverse direction?
- Sat Mar 17, 2018 5:36 pm
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: Adiabatic System
- Replies: 5
- Views: 899
Adiabatic System
Since is no entropy change in an adiabatic process, there is no heat being transferred. Would that mean that an adiabatic process is always considered reversible?
- Sat Mar 17, 2018 5:24 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Gas Expansion
- Replies: 1
- Views: 371
Gas Expansion
If ΔU=0, why would gas expand?
- Sat Mar 17, 2018 5:07 pm
- Forum: Calculating Work of Expansion
- Topic: Free energy and work
- Replies: 3
- Views: 491
Re: Free energy and work
Well when we refer to Gibbs Free Energy (G), its just the energy that is free to do useful work. So the change in Gibbs Free Energy (ΔG) is equal to the maximum amount of work done by a process at constant temperature and pressure (ΔG=[W]max).
- Sat Mar 17, 2018 5:00 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Isolated Systems
- Replies: 3
- Views: 501
Re: Isolated Systems
I think so because an isolated system is a closed system that cannot exchange energy with the surroundings, so I would assume that the system's volume remains constant.