Search found 264 matches

by NS_Tutor_Mathias
Mon Oct 14, 2019 3:13 pm
Forum: Post your questions here about any videos in the class
Topic: CR video Electrostatic
Replies: 1
Views: 10

Re: CR video Electrostatic

I think you meant to ask how we know about the 2 N/C. Remember that these are field strengths, and fields are not uniform in strength, but fall off as an inverse square of distance. So what we are doing in this problem is finding field strengths at point A . The easiest way to do this is to calculat...
by NS_Tutor_Mathias
Mon Oct 14, 2019 2:58 pm
Forum: Post your questions here about Next Step's MCAT books
Topic: Chemistry Chapter 3: Reactions and Stoichiometry page 58 Theorhetical yield
Replies: 1
Views: 4

Re: Chemistry Chapter 3: Reactions and Stoichiometry page 58 Theorhetical yield

This is a known issue with our book and you are totally correct. Keep up the good work, and feel free to keep asking sharp-eyed questions!
by NS_Tutor_Mathias
Wed Oct 09, 2019 11:38 am
Forum: Post your questions here about Next Step's MCAT books
Topic: Physics pg. 2, 3, 6, and 7
Replies: 1
Views: 18

Re: Physics pg. 2, 3, 6, and 7

Sorry, I don't mean to be obtuse, but are you asking about the chapter 1 practice passage problems? And if not, would you mind providing a chapter and page number?
by NS_Tutor_Mathias
Wed Oct 09, 2019 11:35 am
Forum: Post your questions here about Next Step's MCAT books
Topic: practice passage at the end of chapter 2 (gen/orgo chem)
Replies: 2
Views: 12

Re: practice passage at the end of chapter 2 (gen/orgo chem)

Here is a filled-in version of the diagram for O2: https://www.quora.com/Why-is-the-molecular-orbital-diagram-for-O%E2%82%82-different-from-N%E2%82%82 As you can see, you really just line up first the s-shells opposite each other then then p-shells opposite each other, then fill the whole thing up b...
by NS_Tutor_Mathias
Wed Sep 25, 2019 1:52 pm
Forum: Post your questions here about any videos in the class
Topic: Chirality
Replies: 2
Views: 116

Re: Chirality

Hey there. I'm having a bit of trouble finding where in the video this is said. Could you give me a timestamp or section? In the following molecule - a central carbon (let's call it C') attached to a methyl group, an -OH group, a hydrogen, and a benzene ring - is the carbon in the benzene ring conne...
by NS_Tutor_Mathias
Sat Sep 21, 2019 6:48 pm
Forum: General Discussion & FAQ
Topic: 2 Passages on CARS
Replies: 1
Views: 64

Re: 2 Passages on CARS

Yes, a passage is just one block of text. So that phrasing suggests that you should read two of those, do all the assorted questions and then call it a day. Particularly, the plan suggests using the 108 Questions CARS book - but frankly, any source of CARS passages that you enjoy should be adequate....
by NS_Tutor_Mathias
Fri Sep 20, 2019 5:27 pm
Forum: General Discussion & FAQ
Topic: Lessons Learned Journal Template
Replies: 1
Views: 79

Re: Lessons Learned Journal Template

Hi there!

I think you're referring to this post: http://forum.nextstepmcat.com/viewtopic.php?t=347

Let me know if that helps.
by NS_Tutor_Mathias
Fri Sep 13, 2019 3:11 am
Forum: Post your questions here about any videos in the class
Topic: Lesson 3: Part 10
Replies: 1
Views: 87

Re: Lesson 3: Part 10

The pKb of acetate (9.2) tells us it is a weak base. You are right, there is a common heuristic that is often useful (weak acids produce strong bases etc.) that is good to have in mind when estimating answers. However, like so many things, it is not always true ;) I am not sure the use of "therefore...
by NS_Tutor_Mathias
Fri Sep 13, 2019 1:06 am
Forum: General Discussion & FAQ
Topic: Titration Equations
Replies: 3
Views: 210

Re: Titration Equations

Careful, it is both exergonic (deltaG is negative) and endothermic (deltaH is positive). And since deltaG = deltaH - TdeltaS, we know that the only way for those two things to be true is that deltaS must be positive. Be sure to pay close attention to the difference in the word exergonic (negative de...
by NS_Tutor_Mathias
Fri Sep 13, 2019 12:54 am
Forum: Next Step Books
Topic: Chem/Orgo Book Pg. 162, Q7
Replies: 2
Views: 137

Re: Chem/Orgo Book Pg. 162, Q7

Hey there, sorry this slipped off my radar a little bit! You would simply know this from the molar mass of RbOh, which you can determine from the periodic table - simply the mass of Rb + O + H. This should not come from the normality equation at all. For simplicity's sake, I suggest splitting the pr...