Zinc`(Zn)` a silvbery metal is used to from brass (with copper) and to plate iron to prevent corrosion. How many grams of `Zn` are there in `0.25 mol` of `Za`?

How many atoms of copper are present in 0.35 mol of pure copper metal ?

Metallic Zn has a hexagonal close-packed array of Zn atoms. How many voids are present in 0.5mol of Zn?

From a solution of copper sulphate, the metal used to recover copper, is 1)Na 2)Ag 3)Hg 4)Zn

In a silver plating system, an electrolysis current of 5.0 A is used for a certain time and 0.5 mol of silver is deposited. How many moles of copper and iron will be deposited in their respective plating system if an electrolysis current of 10.0 A is passed for twice the time for silver plating. ( Relative atomic mass of silver=107.3, of copper -63.54, of iron=55.85).

Choose the correct option from the bracket and explain the statement giving reason: (oxidation, displacement, electrolysis, reduction, zinc, copper, double, displacement, decomposition ) To prevent rusting,a layer of ___metal is applied on iron sheets

One half-cell in a voltaic cell is constructed from a silver wire dipped in silver nitrate solution of unknonw concentration. It other half cell consists of a zinc electrode dipping in 1.0M solution of Zn(NO_3)_2 . A voltage of 1.48V is measure for this cell. Use this information to calculate the concentration of silver nitrate solution used (E_(Zn^(2+)//Zn)^0=-0.76V,E_(Ag^+//Ag)^0=+0.80V)