Four grams of copper chloride on analysis was found to contain 1.890 g of copper (Cu) and 2.110 g of chlorine (Cl). What is the empirical formula of copper chloride?

On analysis, a certain compound was found to contain 254g of iodine (at.mass 127) and 80g oxygen (at.mass 16). What is the formula of the compound ?

A given sample of pure compound contains 9.81 g of Zn, 1.8xx10^(23) atoms of chromium, and 0.60 mol of oxygen atoms. What is the simplest formula?

One gram of a metallic chloride was found to contain 0.835 g of chlorine. Its vapour density is 85.5.If its moleculars formula is M_(x) Cl_(y) ,then what is value of (x+y) ?

Deildrin, an insecticide, contains C,H,Cl and O. Combustion of 29.72 mg of dieldrin gave 41.21 mg CO_2 and 5.63 mg of H_2O . In a separate analysis 25.31mg of dieldein was converted into 57.13 mg Ag Cl. What is the empirical formula of diedrin ?

74.5g of metal chloride contains 35.5g of chlorine. the equivalent weight of metal is.....

A copper atom consists of copper nucleus surrounded by 29 electrons. The atomic weight of copper is 63.5mol e^(-1) . Let us now take two pieces of copper each weighing 10g. Let us trandfer one elcetron from one piece to another for every 100 atoms in that piece. What will be the Coulomb force between the two pieces after the trandfer of electrons, if they are 1cm apart? Avogadro number= 6xx10^(23) mol e^(-1) , charge on an electron =- 1.6xx10^(-19)C.

When 36.0 g of a solute having the empirical formula CH_(2)O is dissovled in 1.20 kg of water, the solution freezes at -0.93^(@)C . What is the moleculer formula of the solute ? ( K_(f) = 1.86^(@)C kg mol^(-1) )

Weight of copper oxide obtained by treating 2.16 g metallic copper with nitric acid and subsequent ignition was 2.70 g. In another experiment, 1.15 g of copper oxide on reduction yielded 0.92 g of copper. Show that these results illustrate the law of definite proportions.

A current of 4 amp was passed for 1.5 hours through a solution of copper sulphate when 3.2 g of copper was deposited. Calculate the current efficiency.