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` ?

4.2g of baking soda on strong ignition in an open container leaves a residue of mass

0.532 g of the chloroplatinate of an organic base (mol.wt 24 D) gave 0.195 g of Pt on ignition. Then the number of nitrogen atoms per molecule of the base is

What is the weight (in g) of Na_(2) CO_(3) (molar mass= 106) present in 250 mL of its 0.2 M solution?

Calculate the mass of sodium chloride that is to be treated with 19.6g of sulphuric acid in order to produce 7.3g of hydrogen chloride and 24g of sodium bisulphate. Hint: NaCl +H_(2)SO_(4) to NaHSO_(4)+HCl

The 0.2 g of anhydrous organic acid gave on combustion 0.04 g of water and 0.195 g of CO_(2) The acid is a dibasic acid and 0.5 g of its silver salt leaves on ignition -.355 g of silver. The percentage of carbon in the compound is

The 0.2 g of anhydrous organic acid gave on combustion 0.04 g of water and 0.195 g of CO_2 The acid is a dibasic acid and 0.5 g of its silver salt leaves on ignition 0.355 g of silver. The percentage of hydrogen in the compound is

1.2g of Mg (At. mass 24) will produce MgO equal to