Recent content by thee

can anyone tell me which number is the answer

Which is the acid salt of which the aqueous solution is basic? {\rm{1) NaHSO}}_{\rm{4}} {\rm{2) Na}}_{\rm{2}} {\rm{So}}_{\rm{4}} {\rm{3) NaHCO}}_{\rm{3}} {\rm{4) Na}}_{\rm{2}} {\rm{CO}}_{\rm{3}} {\rm{5) Mg(OH)}}_{\rm{2}} {\rm{6) MgCl(OH)}} can anyone explain what is acid salt...

I want to ask that there is any situation that the solution of Hydroclauric acid and water can make the pH of this solution gretater than 7.

picture I suppose that \beta is the refracting angle I think that it try to proove that \beta is equal to \theta angle \alpha will become the least.

A shaft of light passes through a prism with refracting angle \theta and refractive index n . Let \alpha be the deviation angle of the shaft. Demonstrate that if the shaft of light passes through the prism symetrically the angle \alpha is the least?