## I can’t ask questions using Tor on tor.stackexchange.com

I use Tor Browser 7.5.2 on Windows 7 and apparently I can’t post question on tor.stackexchange.com (this website), I usually always post question on stackexchange using Tor but this time I can’t (see my screenshot bellow).

The issues is huge guys, if even Tor techies people can’t figure out what wrong with that

For my part I’m not going ask all questions I’m willing to if Tor is blocked on this website this look like “censorship in upstream”

“QUANTUM to degrade/deny/disrupt Tor access? “

• ref : https://www.eff.org/files/2014/04/09/20131004-guard-tor_stinks.pdf

Thank you for understanding. 🙂

## Where do questions about SQL Servers logical processing order go? [duplicate]

• Which computer science / programming Stack Exchange sites do I post on?

I am not 100% clear on which questions belong in Stack Overflow.

Specifically, I want to ask why I cannot write queries in SQL Server
that follow the logical processing order.

Is this the type of question one may ask in SO?

## Chemistry Reactions Questions [on hold]

I have been working through some chemistry questions and I just wanted to make sure I had the correct answers:

15 g of Mg react with 25 g HCL.

(A.) Find the limiting reactant:

(15 g Mg)(1 mol/24 g Mg)(1 mol H2/1 mol Mg) = 0.625 mol H2

(25 g HCl)(1 mol/37 g HCl)(1 mol H/2 mol HCL) = 0.338 mol H2

HCl is the limiting factor because it produces a lesser amount of hydrogen gas.

(B.) Find the theoretical yield of H gas:

(0.338 mol H2)(2 g H2/1 mol H2) = 0.676 g H2

(C.) Find the % yield of H gas if the actual yield is 0.3 grams:

(0.3 g H2)/(0.676 g H2) * 100% = 44.38%

______________________________________________________________

Find the partial pressure of Oxygen if the total pressure is 750 mm Hg and you have 8 grams of O and 14 grams of N.

(750 mm Hg * 8 g O)/ (22 g total) = 272.73 mm Hg

I would really appreciate any help! Thank you! (I know this is a chemistry related problem, but I did not get many hits when I posted it under chemistry, so I thought I would try here!)

## Question: Questions about white privilege?

As an Uber driver, why would I go into a neighborhood where somebody just threatened me because of my job and who I have a contract to drive for ?

As any driver, why would I go into a bad neighborhood with higher crime than the city, county, state or national average crime rates ?

As an uber driver, why would I pick up a passenger who damages my car, or acts like a nut while in my car ?

As any driver, why would I pick up somebody who comes from a high crime area, and drive him, or a crew..
To a lower crime area, when something isn’t quite right about that ?

Why should I be the bus that brings people with criminal intent, to his victim ?

As a any driver, why should I pick somebody up from a known place of disorder or crime, like clubs, or drive anybody to there ?

## Chemistry Reactions Questions [migrated]

I have been working through some chemistry questions and I just wanted to make sure I had the correct answers:

15 g of Mg react with 25 g HCL.

(A.) Find the limiting reactant:

(15 g Mg)(1 mol/24 g Mg)(1 mol H2/1 mol Mg) = 0.625 mol H2

(25 g HCl)(1 mol/37 g HCl)(1 mol H/2 mol HCL) = 0.338 mol H2

HCl is the limiting factor because it produces a lesser amount of hydrogen gas.

(B.) Find the theoretical yield of H gas:

(0.338 mol H2)(2 g H2/1 mol H2) = 0.676 g H2

(C.) Find the % yield of H gas if the actual yield is 0.3 grams:

(0.3 g H2)/(0.676 g H2) * 100% = 44.38%

______________________________________________________________

Find the partial pressure of Oxygen if the total pressure is 750 mm Hg and you have 8 grams of O and 14 grams of N.

(750 mm Hg * 8 g O)/ (22 g total) = 272.73 mm Hg

I would really appreciate any help! Thank you! (I know this is a chemistry related problem, but I did not get many hits when I posted it under chemistry, so I thought I would try here!)

## Swaptions Gamma Interview Questions

A while ago, I interviewed for a trader role and was given the below assignment (I didn’t get the job). I wanted to revisit the questions to learn from my mistakes and be better prepared next time. Generally speaking, I have a good understanding of options and greeks but for some reason I’m having a hard time applying it here.

Question 1
Based on the P&L profile below please calculate a 25bps gamma profile for the up and down shocks.

I’m not sure what’s meant by gamma profile or why the +/-50bp values are highlighted. I see that the changes in P&L are non-linear and asymmetrical, similar to the payoff diagram of a long put.

I know that

$$\P&L$$ = $$delta$$ * $$Delta$$S + $$frac{1}{2}$$ * $$Gamma$$ * ($$Delta S^2$$)

but I’m not sure how to isolate the delta and gamma. Any pointers would be appreciated!

Question 2 The desk would like to purchase 5k of 25bps gamma with a goal of remaining delta and vega neutral. Utilizing the trades below develop the most cost efficient (cheapest 1m carry) way to achieve this goal.

To calculate 25bps Gamma, I used the following formula:

$$Gamma_{25}$$ = $$frac{Dn_{25} + Up_{25} – 2 * Base}{2 * Base * 0.0025^2}$$

which gives me the following values:

1m/10y = 102,204
3m/10y = 32,932
6m/10y = 16,095
1y/10y = 7,515

2y/10y = 3,671

I thought I should be able to re-calculate the Delta (10bp) as $$\Up_{10} – Base$$ but the results don’t make sense.

Can you confirm that my delta/gamma calculations are correct or tell me where I went wrong?

Finally, I tried to find a combination of straddles where the Gamma ~= 5k and Delta and Vega are close to 0 but I’m having a hard time finding a feasible solution, which makes me think my Gamma calculations might be incorrect.