# Search results

1. ### Solving a log equation with (3) different bases

Thanks! That is disappointing, this site kept saying "The algebraic solution is too difficult" so I thought there definitely has to be one ;p, but I guess not. What do you mean by finite number of standard functions? What about an infinite number?
2. ### Solving a log equation with (3) different bases

I used to think I was master of any high school math course until I came across this log equation in a calculus textbook. \log_{2}x + \log_{5}(2x+1) = \ln x I use the change of base to convert everything to one base and then I get down to: (2x+1)^{\ln2} = x^{\ln2\ln5 - \ln5} I have no...
3. ### Lemon juice vs Lemon juice + salt

Oh I see, I find chemistry so interesting and I was just curious. Thanks for your help!
4. ### Lemon juice vs Lemon juice + salt

So would it be correct to say that the chloride ions act as a catalyst? And would this work with any other negative ions such as F, Br? Sorry if these are simple questions I'm only in high school chemistry.
5. ### Lemon juice vs Lemon juice + salt

Hello, I did an experiment to try and clean copper pennies with acids like lemon juice and vinegar. When they are dipped in only lemon juice, nothing happens. However, when you add salt, the effect is almost instantaneous. Why does adding salt to lemon juice (citric acid?) make it a much...