What is the molar mass of diacidic organic Lewis base `(B)`, if `12g` of its chloroplatinate salt `(BH_2 PtCI_6)` on ignition produced `5g` residue of `Pt` ?

What is the molar mass of C6H5NH2 .

What would be the molar mass of a compound if 6.21g of it dissolved in 24.0 g of chloroform form a solution that has a higher boiling point of 68.04^@C and the boiling point of pure chloroform is 61.7^C and the boiling point elevation constant K_b for chloroform is 3.63^@C/m .

18g of glucose (molar mass 180gmol^-1) is present in 500cm^3 of its aqueous solution. What is the molarity of the solution? What additional data is required if the molality of the solution is also required to be calculated?

Calcium lactate is a salt of weak organic acid and strong base represented as Ca(LaC)_(2). A saturated solution of Ca(LaC)_(2) contains 0.13 mole in 0.5 litre solution. pOH of solution is 5.60. What is pK_(a) of lactic acid?

The absolute mass of one molecule of a substance is 5.32 (10*-32) g . What is its molecular mass .

What is the concentration of solution of sucrose (molar mass=342) which is isotonic with a solution containing 6 g of urea per litre?

Food X contains 6 units of vitamin A per g and 7 units of vitamin B per g and costs Rs 2 per g. Food Y contains 8 units of vitamin A per g and food Y contains 8 units of vitamin A per g and 12 units of vitamin B per g and costs Rs 2.50 per g. The daily minimum requirement of vitamin A and vitamin B are 100 units and 120 uniys respectively. Formulate the above as a LPP to minimize the cost.

If 30 g a solute of molecular mass 154 is dissolved in 250 g of benzene. What will be the elevation in boiling point of the resuling solution ? (Given : K_B(C_(6)H_(6)) =2.6 K kg mol^(-1) )

The equilibrium constant K_(p) for the following reaction is 4.5 N_(2)O_(4)(g)hArr2NO_(2)(g) What would be the average molar mass ("in"g//mol) of an equilibriumm mixture of N_(2)O)(4) and NO_(2) formed by the dissociation of pure N_(2)O_(4) at a jtotal pressure of 2 atm ?