Search found 30 matches

by 504909207
Sun Mar 03, 2019 1:04 pm
Forum: First Order Reactions
Topic: Possiility
Replies: 2
Views: 56

Possiility

Is it possible to have [A], [B], [C], etc all in the first order?
by 504909207
Sun Mar 03, 2019 1:02 pm
Forum: Zero Order Reactions
Topic: Units of K
Replies: 2
Views: 58

Units of K

What are the untis of K for a zero order reaction?
by 504909207
Sun Mar 03, 2019 1:02 pm
Forum: Second Order Reactions
Topic: Second order
Replies: 1
Views: 70

Second order

Is it possible to have [A], [B], & [C] all in second order? If so, what would the units for K be ?
by 504909207
Sun Mar 03, 2019 12:29 am
Forum: General Rate Laws
Topic: Overall sum
Replies: 7
Views: 137

Overall sum

Just to verify, is the overall order reaction just the sum of n and m?
by 504909207
Sun Mar 03, 2019 12:27 am
Forum: Method of Initial Rates (To Determine n and k)
Topic: negative n?
Replies: 2
Views: 67

negative n?

Could n ever be negative?
by 504909207
Sun Mar 03, 2019 12:23 am
Forum: First Order Reactions
Topic: determine n
Replies: 1
Views: 58

determine n

How do you determine n given the table?
by 504909207
Sun Mar 03, 2019 12:22 am
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: pH at 10 C
Replies: 3
Views: 89

pH at 10 C

The quiz had a question that asked what conditions (basic or acidic) is a pH=7 at 10 degree Celcius. Would it be acidic?
by 504909207
Sun Feb 24, 2019 1:24 am
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Practice exercise 9.2B 6th edition
Replies: 1
Views: 53

Practice exercise 9.2B 6th edition

The temperature of 5.5 g of stainless steel is increased from 20. C to
100.C. What is the change in the entropy of the stainless steel? The specific heat
capacity of stainless steel is 0.51 J(C)-1g-1.?

I don't understand what to do when given mass in grams but not moles for this case. Please help :(
by 504909207
Sat Feb 23, 2019 9:07 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Self-Test 8.11A (6th edition)
Replies: 1
Views: 57

Self-Test 8.11A (6th edition)

can someone please explain the process of this question? Self-Test 8.11A When 0.231 g of phosphorus reacts with chlorine to form phosphorus trichloride, PCl3, in a constant-pressure calorimeter of heat capacity 216 J·(&C)$1, the temperature of the calorimeter rises by 11.06 &C. Write the the...
by 504909207
Thu Feb 14, 2019 11:23 am
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Molar and specific heat capacity
Replies: 3
Views: 96

Molar and specific heat capacity

Whats the difference between molar capacity and specific heat capacity?
by 504909207
Thu Feb 14, 2019 11:21 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: When does delta U equal zero?
Replies: 17
Views: 382

Re: When does delta U equal zero?

When work =0 and it is a adiabetical process, meaning that q=0.
by 504909207
Thu Feb 14, 2019 11:18 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: buffer
Replies: 2
Views: 76

buffer

Im sorry, but what exactly is a buffer? :(
by 504909207
Thu Feb 14, 2019 11:17 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Midterm
Replies: 12
Views: 223

Re: Midterm

Since the midterm hardly had any thermo concepts, should we expect to see that more on quiz 2?
by 504909207
Tue Feb 12, 2019 3:54 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Specific heat
Replies: 3
Views: 93

Re: Specific heat

Whats the difference between heat capacity and specific heat capacity?
by 504909207
Sat Feb 09, 2019 1:13 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Bond Enthalpy
Replies: 4
Views: 71

Re: Bond Enthalpy

For bond enthalpies are we supposed to know how to draw all of the molecular shapes?
by 504909207
Tue Feb 05, 2019 6:48 pm
Forum: Calculating Work of Expansion
Topic: Work
Replies: 3
Views: 87

Re: Work

(unanswered question from PLF session)

Is there a conceptional reason as to why a reversible reaction does more work than a reversible one?
by 504909207
Fri Feb 01, 2019 8:45 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Closed System
Replies: 6
Views: 143

Re: Closed System

Dr. Lavelle said that most of the time we will be dealing with closed systems. Does anybody know why is this?
by 504909207
Fri Feb 01, 2019 8:43 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Delta U vs Delta H
Replies: 6
Views: 108

Re: Delta U vs Delta H

Is delta Hf is found by googling? If so, im assuming its value will be provided on the test...?
by 504909207
Fri Feb 01, 2019 8:41 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Delta U vs Delta H
Replies: 6
Views: 108

Re: Delta U vs Delta H

Today (02/1/19) in class the last example said that an exothermic rxn occurs in an open beaker? does open beaker mean volume is constant?
by 504909207
Fri Jan 25, 2019 9:33 pm
Forum: Administrative Questions and Class Announcements
Topic: Homework
Replies: 5
Views: 344

Re: Homework

What chapter should HW 4 be on?
by 504909207
Thu Jan 24, 2019 8:23 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: Homework 6th edition 12.55.D
Replies: 1
Views: 209

Homework 6th edition 12.55.D

Can someone please explain their answer for chapter 12 number 55 part D of the 6th edition textbook?
by 504909207
Thu Jan 24, 2019 8:05 pm
Forum: Administrative Questions and Class Announcements
Topic: Peer Learning Sessions [ENDORSED]
Replies: 10
Views: 6682

Re: Peer Learning Sessions [ENDORSED]

Emily Huang 1E wrote:Do we get worksheets to work on at step up sessions or peer learning sessions?


The ones that I've gone to did not give me any worksheet... but maybe the drop ins do?
by 504909207
Thu Jan 24, 2019 8:00 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Weak Acids and Bases
Replies: 5
Views: 231

Weak Acids and Bases

How do you know if its a weak base when you're not given the chemical equation? Is just something that we have to memorize?
by 504909207
Tue Jan 15, 2019 7:15 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: pH question
Replies: 3
Views: 74

Re: pH question

I have the 6th edition textbook and solution manual for it. As I was working on 12.29 part d, i noticed that I got pOH=0.15 & pH=13.85 but the solutions manual has pOH=3.15 and pH=10.85 . The way i solved was ((2.00 mL/.500mL)*(.175))= .7 then i did -log(.7) which gave me the pOH=.15 what the bo...
by 504909207
Tue Jan 15, 2019 4:28 pm
Forum: Naming
Topic: Regarding the test... [ENDORSED]
Replies: 12
Views: 3971

Re: Regarding the test... [ENDORSED]

Will Kw=1.0*10^-14 be given on the formula sheet for the exam?
by 504909207
Tue Jan 15, 2019 4:25 pm
Forum: Administrative Questions and Class Announcements
Topic: Peer Learning Sessions [ENDORSED]
Replies: 10
Views: 6682

Re: Peer Learning Sessions [ENDORSED]

Does every "step up" session cover the same thing as the others that are also on the same day?
by 504909207
Fri Jan 11, 2019 9:49 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Endothermic
Replies: 6
Views: 139

Endothermic

Why does heat prefer endothermic reactions?
by 504909207
Fri Jan 11, 2019 9:43 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Concentration of P using the Quadratic Formula
Replies: 3
Views: 53

Concentration of P using the Quadratic Formula

Hello,

does anybody know why professor Lavelle said that one way to check today's problem was to plug the numbers in and see if it equals zero?
by 504909207
Fri Jan 11, 2019 9:36 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Concentration of P using the Quadratic Formula
Replies: 2
Views: 42

Concentration of P using the Quadratic Formula

Hello,

does anybody know why professor Lavelle said that one way to check today's problem was to plug the numbers in and see if it equals zero?
by 504909207
Fri Jan 11, 2019 9:31 pm
Forum: Administrative Questions and Class Announcements
Topic: Peer Learning Sessions [ENDORSED]
Replies: 10
Views: 6682

Re: Peer Learning Sessions [ENDORSED]

Does anybody know if the PLF sessions begin week 1 or week 2? I tried going to the first one, on Wednesday but nobody was there...

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