When one litre of a saturated solution of `PbCl_(2)` (mol. Mass=278) is evaported, the residue is found to weight 2.78g. If `K_(sp)` of `PbCl_(2)` is represented as `yxx10^(-6)` then find the value of y.

If x^(2) +y^(2) -4x + 6y + c = 0 represents a circle with radius 6 then find the value of c.

A solution is saturated in SrCO_(3) , and SrF_(2) . The CO_(3)^(2-) was found to be 10^(-3) mol/L. If the concentration of Fin solution is represented as yxx 10^(-2) M then what is the value of 'y'? [Given : K_(sp) (SrCO_(3))= 2.5 xx10^(-10), K_(sp) (SrF_(2))= 10^(-10)]

If the slope of one of the lines represented by ax^(2)-6xy+y^(2)=0 is the square of the other, then the value of a is

Find the value of h if the slopes of the lines represented by 6x^(2)+2hxy+y^(2)=0 are in the ratio 1:2.

If the slope of one of the lines represented by ax^(2) - 6xy + y^(2) = 0 is the square of the other, then the value of a is

A saturated solution of Ca_3 (PO_4) _2 has [Ca^(+2) ]=2xx 10 ^(-8) M and [PO_4^(-3) ] =1.6 xx 10 ^(-5) M , K_(sp) " of " Ca_3(PO_4) _2 is

Units of K_c for xA_((g)) harr yB_((g)) is lit^2-mol^(-2) , then the values of x & y cannot be

Find the value of k, if x = 2, y = 1 is a solution of 2x + 3y = k. Find 2 more solutions of the equation.