Chemistry Kb question need to clarify something
posted by Lori on .
the pKb for methylamine is 3.36, what is the Kb for methylamine?
pKa+pKb= 14.00
Kb= 10^pKb = 4.4x10^4 is the answer
but HOW?? what is punched into the calculator to get 4.4 x 10^4??

pKb = 3.36
pKb = log Kb
3.36 = logKb
3.36 = log Kb
Punch in 3.36 and hit the change sign button OR punch in 3.36 directly, then hit the 10^x key. That will return 4.36515E4 which rounds to 4.36E4. 
3.36(log button or 10^x button)= syntax error ??

the key sequence will depend on the type of calculator that you have. If it is a VPAM or similar (like a Casio FX83) then the sequence is something like
<shift><10^><><3><.><3><6><=>
and the display will show
0.0004365
(depending on how the display is set up).
The exact key sequence will depend on the model of calculator you have.