Yes but no

16 comments

What the hell is that question anyway? At which concentration? I hope this is not a serious chemistry test.
- It is not asking about a solution. It only specifies carbonic acid so you can assume pure carbonic acid.
  
  H___2CO___3
  
  Carbonic acid reacts with water as a base to release CO2 and H2O.
  
  So the pH of a solution of carbonic acid with water is an equilibrium of remaining dissolved CO2 and remaining acid. Which then relies on temperature and pressure.
  
  Formula
  
  Given that water isn't mentioned the only correct answer is 0
  
  ??? pH is only defined in a solution of water.
  
  But more importantly, the correct answer is 5
5 != "5"
- Depends on the language though, sometimes 5 == "5" and 5 !== "5" (PHP & JS)
  
  My guess is that a .trim() is missing somewhere
  
  Edit: removed typo in example code
  
  5! == "5" (PHP & JS)
  
  is not valid in either PHP or JS
  
  5! == "5"
  
  isn’t valid in either JS or PHP.
- Permanently Deleted
  
  x = x+1 therefore reality can be anything I want
you were supposed to provide an integer, not a string! users these days. pfft.
- 5.toInteger()
  
  int('5')
Answer is actually a floating point value between 5.0 and 5.9 but the thing only displays a whole number.
I thought it was five.
5
Cinco
It's paradoxical. It is, but it also isn't
Oh, well then. I will take that into account the next time and do better then.

You've viewed 16 comments.