Recent content by jolly_math

The answer is that the 2nd, 3rd and 6th compounds can undergo Friedel-Crafts alkylation. I don't understand why the 4th compound cannot undergo a Friedel-Crafts alkylation reaction, but the 2nd compound can. It has an activating NH2 group and a weakly deactivating Br group, and it's similar to...

I've never seen this in my textbook or the resources I've used so far though. Is this a commonly-known fact?

Here are 2 options: A) B) For both syntheses, a protecting group is added to the alcohol, the ester is hydrolyzed to a carboxylic acid, then it is turned into an acid chloride using SOCl2. The difference is that A is base-catalyzed and B is acid-catalyzed. The correct answer is A, but I...

Why is it that, due to symmetry, ∆V2 = 0? If I remove V2, C1 and C4 (in parallel) are in series to C3 and C5 (in parallel). When I redraw V2, how I would be able to determine that V2 = 0? Thank you.

Why is it that, due to symmetry, ∆V2 = 0 and ∆V1 = ∆V4 = ∆V5 = ∆V3? I don't really understand the reasoning behind the simplification. Thank you.

First assuming only one sphere at a potential of 1500 V, the charge would be q = 4πεrV = 4π(8.85×10 −12C2/N · m)(0.150 m)(1500 V) = 2.50×10−8C. The potential from the sphere at a distance of 10.0 m would be V =(1500V)(0.150m)/(10.0m) =22.5V. I don't understand the reasoning of the...

After the switch is closed, current flows clockwise from the battery to resistor R1 and down through the switch. I don't understand the reasoning for the following: the current from the capacitor flows counterclockwise and down through the switch to resistor R2. How do I determine the direction...

Okay, thank you. Ignoring the actual values, could either path be used to get the same potential difference?

The solution chooses the centre wire to determine the potential difference, where Va−(0.909 A)(2.00 Ω)=Vb and Vb - Va = -1.82 If I choose the top wire (passing through the 12 V battery and 4 Ω resistor), Va - 12 + (1.636 A)(4.00 Ω)=Vb, and Vb - Va is different (= -5.46 V). Why would this path...

There are 3 parallel paths: one through 4.0 µF, one through 6.0 µF, and one through 5.0 µF and 7.0 µF. Why wouldn't there be another path through 4.0 µF, 7.0 µF, 5.0 µF, and 6.0 µF? Also, what determines the direction of current flow when there is a diagonal across parallel paths? Thank you.

When one mass is held fixed, the other mass acquires a speed v from gravity. I don't understand the following explanation: When both masses can move, they share the kinetic energy, so both have speed v/√2, so the relative speed is √2v. Hence to collapse the same distance r, the latter case will...

The name of this molecule is 1‐(3‐nitrophenyl)ethanol. I'm confused why ethanol is treated as the parent chain in this case, not the phenyl group. If the ring is composed of more atoms, should it be the parent chain? Thank you.

I'm representing the charge of Pt as [Pt](1st or 2nd) [Pt(NH3)4I2]: overall charge is [Pt](1st) - 2 [PtI4]: overall charge is [Pt](2nd) - 4 I want to find charge of Pt so that [Pt] - 2 + [Pt] - 4 = [Pt](1st) + [Pt](2nd) + 6 = 0, possibilities are 3 + 3, 4 + 2, etc.

I know that the compound is tetraamminediiodoplatinum tetraiodoplatinate. To make the compound neutral, I find there are several possibilities of the platinum ion oxidation state in the complex cation and anion(3 and 3, 4 and 2, etc.) How would I be able to determine the oxidation state? Thank you.

This would be destructive interference. d sin θ = λ so that the overall phase difference is 1.5λ, which still ensures destructive interference - is this right?