Search found 23 matches
- Sat Mar 18, 2017 6:19 pm
- Forum: *Alkenes
- Topic: Naming Alkenes
- Replies: 2
- Views: 1460
Re: Naming Alkenes
So we will not be marked down if we choose to do it one way or another?
- Sat Mar 18, 2017 6:11 pm
- Forum: *Alkenes
- Topic: Naming Alkenes
- Replies: 2
- Views: 1460
Naming Alkenes
When you are naming alkenes, does the number where the double bond is go in the front, or after the but or another prefix. Thank you.
- Wed Mar 15, 2017 3:16 pm
- Forum: Stereochemistry in Organic Compounds (Chirality, Stereoisomers, R/S, d/l, Fischer Projections)
- Topic: Ring Flipping
- Replies: 1
- Views: 1742
Ring Flipping
Can someone please explain ring flipping in a little more detail? I'm still confused. Thank you.
- Wed Mar 08, 2017 2:42 pm
- Forum: *Alkanes
- Topic: Naming [ENDORSED]
- Replies: 93
- Views: 16837
Re: Naming [ENDORSED]
When you add the numbers to the name, I know that the position is the first number, but what is the number after the name? Ex. 3-methyl-5,5-pentanehexane or whatever it would be. Thank you.
- Fri Mar 03, 2017 4:48 pm
- Forum: *Organic Reaction Mechanisms in General
- Topic: H+
- Replies: 1
- Views: 933
H+
In an organic reaction, when there is an H+ over the forward arrow, how is this different than adding the H+ in the first part of the reaction? Thank you.
- Wed Feb 22, 2017 11:20 am
- Forum: General Rate Laws
- Topic: 15.13 Homework Question
- Replies: 2
- Views: 813
15.13 Homework Question
Can you please explain how to do 15.13 in the Homework? "When 0.52 g of H2 and 0.19 g of I2 are confined to a 750. -ml reaction vessel and heated to 700 K, they react by a second-order process (first order in each reactant), with k=0.063 L/molxs in the rate law for the rate of formation of HI. ...
- Tue Feb 14, 2017 4:41 pm
- Forum: Balancing Redox Reactions
- Topic: Balancing equations
- Replies: 10
- Views: 1740
Re: Balancing equations
When we are given the Voltage number but we are balancing the equations, does the number change as the equation is multiplied by a constant or a negative?
- Thu Feb 09, 2017 9:53 am
- Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
- Topic: Crystal Problem on Quiz 1
- Replies: 1
- Views: 513
Crystal Problem on Quiz 1
Can someone please explain the Crystal problem from quiz 1? How are both the crystals not perfect? Thank you.
- Tue Jan 31, 2017 10:22 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 1 Preparation Answers
- Replies: 130
- Views: 25749
Re: Quiz 1 Preparation Answers
Could someone please explain number 6?
- Tue Jan 31, 2017 10:41 am
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: work
- Replies: 2
- Views: 570
work
Can you please explain when to use the equation w=PdeltaV vs using w=-nRTln(V2/V1)
- Thu Jan 26, 2017 9:58 pm
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: Delta U
- Replies: 2
- Views: 1170
Delta U
What is the equation that relates delta U, work, and time?
- Sun Jan 22, 2017 3:56 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: 8.49
- Replies: 3
- Views: 981
8.49
How would you go about doing number 49 for the chapter 8 homework? "Oxygen difluoride is a colorless, very poisonous gas that reacts rapidly with water vapor to produce O2, HF, and heat: OF2(g)+H2O(g)--> O2(g)+2HF(g) deltaH=-318J What is the change in internal energy for the reaction of 1.00 mo...
- Sat Jan 14, 2017 6:45 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: 8.21 Homework Problem
- Replies: 1
- Views: 473
8.21 Homework Problem
How would you go about doing 8.21 in the homework? "A piece of copper of mass 20.0 g at 100.0 C is placed in a vessel of negligible heat capacity but containing 50.7 g of water at 22.0 C. Calculate the final temperature of the water. Assume that no energy is lost to the surroundings."
- Sun Nov 27, 2016 9:35 pm
- Forum: Lewis Acids & Bases
- Topic: HW 12.17
- Replies: 4
- Views: 1002
Re: HW 12.17
Sulfur generally accepts a lone pair from another molecule or atom, which is why it is usually considered a lewis acid.
- Thu Nov 17, 2016 9:46 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Kp and n
- Replies: 1
- Views: 1223
Kp and n
For the equilibrium constant Kp, the equation is Kp= Kc(RT)^delta n. For delta n, do you use all of the moles in the reaction (solids, liquids, and gases) or just count the moles for the gases?
- Sun Nov 13, 2016 2:39 pm
- Forum: Bond Lengths & Energies
- Topic: Question 5B Midterm
- Replies: 1
- Views: 767
Question 5B Midterm
For Q5B and C on the midterm, the question is "What is the subshell notation and the total number of orbitals having the quantum numbers n=3, l=2 for a given element?" How would you go about finding this answer? Thank you.
- Sun Nov 06, 2016 10:22 pm
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Which Diagram to draw in a bond with both elements Z<8 and Z>8 [ENDORSED]
- Replies: 8
- Views: 1727
Re: Which Diagram to draw in a bond with both elements Z<8 and Z>8 [ENDORSED]
Can you please give a basic outline of how to draw the diagram? I'm still slightly confused on how to get started. Thank you.
- Mon Oct 31, 2016 8:13 pm
- Forum: Einstein Equation
- Topic: Quiz 1, Question 5
- Replies: 1
- Views: 807
Quiz 1, Question 5
Could someone please explain how to do question 5 on quiz number 1? Fluorescence is the property in which molecules absorb and emit light where the photon emitted is lower energy than the photon absorbed. The energy unaccounted for is dissipated across the molecule. Diphenylanthracene (DPA) is a mol...
- Tue Oct 25, 2016 8:45 am
- Forum: Student Social/Study Group
- Topic: Rieber Terrace Study Group
- Replies: 12
- Views: 2082
Re: Rieber Terrace Study Group
I live in rieber terrace too! Can I join the study group as well?
- Mon Oct 24, 2016 1:12 pm
- Forum: Electronegativity
- Topic: Hybrid Orbitals
- Replies: 2
- Views: 889
Hybrid Orbitals
I'm not sure if this is in the right subject area, but in the practice workbook quiz for quiz #2, question 4 asks to "Identify the hybrid orbitals used by the underlined atom in the acetone CH3COCH3 (the third C is underlined). How would I go about doing this?
- Tue Oct 18, 2016 7:19 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: 2.13 Homework Question [ENDORSED]
- Replies: 3
- Views: 989
Re: 2.13 Homework Question [ENDORSED]
I think that the p-orbital lobes are the shape of a 3D infinity sign where the lines of the px- lie on the x-axis, the py- lies on the y-axis, and the pz- lies on the z-axis.
- Thu Oct 06, 2016 10:12 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: G5 [ENDORSED]
- Replies: 2
- Views: 910
G5 [ENDORSED]
Could someone please help explain how to start off G5 from the review? The question is: A student prepared a solution of sodium carbonate by adding 2.111g of the solid to a 250.0 ml volumetric flask and adding water to the mark. Some of this solution was transferred to a buret. What volume of soluti...
- Fri Sep 30, 2016 8:17 pm
- Forum: Limiting Reactant Calculations
- Topic: Limiting Reactant Question
- Replies: 2
- Views: 2406
Limiting Reactant Question
Can you please explain how to do M.11 on the review questions? A reaction vessel contains 5.77g of white phosphorus and 5.77g of oxygen. The first reaction to take place is the formation of phosphorus(III) oxide, P4)6: P4(s) + 3O2(g)--> P4O6(s). If enough oxygen is present, the oxygen can react furt...