The pH of a substance is given by the formula pH=-log[H^+], where [H^+] is the concentration of hydrogen ions and log x means log(10)x. Find the approximate concentration of hydrogen ions in a substance that has a pH of 6.8.
****use scientific notation

Question

The pH of a substance is given by the formula pH=-log[H^+], where [H^+] is the concentration of hydrogen ions and log x means log(10)x. Find the approximate concentration of hydrogen ions in a substance that has a pH of 6.8. 
****use scientific notation

anonymous · Answer

oh i remember messing this one up before

anonymous · Answer

lol, yeah, as have I

anonymous · Answer

$$6.8=-\log(H^+)$$
$$-6.8=\log(H^+)$$
$$10^{-6.8}=H^+$$

anonymous · Answer

now we have to write it in scientific notation!

anonymous · Answer

http://www.wolframalpha.com/input/?i=10^-6.8

anonymous · Answer

even gives it to you in scientific notation. it is 
$$1.585\times 10^{-7}$$ rounded