Chemistry help please

no binas no win

2 much to write, soz :(

1. There's as much NaOH as there's HCL. That means the concentration of NaOH is (20cm3*0.0001mol/cm3)/25cm3 mol/cm3 if I'm not mistaken.
2. For CO3¯, look up it's acid constant (or whatever, never did this in english :S) and do the calculations i've forgotten how to do :D

No chemistry for 2 years, don't shoot me if it's wrong..

ask perfo

Fairly easy, but I don't have time to explain - google ftw!

i should be able to do it, but i forgot everything :>

use your books.

All science is either physics or stamp collecting.

in before shitstorm.

I hated chemisty even though I wasn't that bad at it :/

no brain no gain

1) I agree with plekter
2)is there some Ka or pKa given ?

edit : you can use this formula K=([products1]^coeffstoec1*[products2]^coeffstoec2)/([reactant1]^coeffstoec1...) ect

and i can't see any solution if theres no K Ka or pKa given

edit2: it's really easy just convert the concentration in amount of mol n=C*V then n na2co3=n Hcl and CHcl is not known => neutralization of na2co3 by the acid

i just start a chemistry school this year

you really have to learn n= C*V and equivalence = neutralization otherwise you will just faillll

Saw that last year

Requires thinking => sorry :(

try learn some basic principles, otherwise you will fail hard