Ph=3.31 then find out `H^+`

If A=[[2,5],[-3,1]] ,then find A^(-1) .

The solubility product of Al(OH)_3 is 2.7xx10^(-11) . Calculate its solubility is gL^(-1) and also find out pH of this solution .

If wavelength of K_(alpha) from Z = 46 is lambda , then find out wavelength of K_(alpha) from Z = 31.

If A=[[3,1],[2,-3]] , then find |adj A| .

" 2) If "A=([3,1],[2,-3])" ,then find "|adj A|" ."

Find the octant in which the following points lie (i) (-3,1,-2) (ii) (3,1,-2) (iii) (-3,1,-2) (iv) (-3,-1,-2)

In each of the following questions, find out the wrong number in the series. 17, 23, 31, 41, 53, 69

A solution of an acid has pH= 4.70 . Find out the concentration of OH^(-) ions (pK_(w)=14) .

If A=[{:(3,1),(2,-3):}] , then find |adj.A| .

The hydronium ion concentration of a solution is 1.3 xx 10^(-5)M . Find out its pH value. Predict the nature of the solution.