How many moles of mercury will be produced by electrolysing 1.0M `Hg(NO_3)_2`. Solution with a current of 2.00A for 3 hours? (molar mass of `Hg(NO_3)_2=200.6gmol^(-1)`.

How many moles of electron will be required for the reduction of 1 mole of Cr_2O_7^(2-) ions to Cr^(3+)

How many mL of 0.1 M HCl are required to react completely with 1g mixture of Na_2CO_3 and NaHCO_3 containing equimolar amounts of both?

How many numbers of four digit can be formed out the digits 1,2,3,4,5,6 without repitition of digits?

What is the mass of 10 moles of sodium sulphite (Na_2SO_3) ?

100 mg of a protein is dissolved in just enough water to make 10.0 mL of solution. If this solution has an osmotic pressure of 13.3mm Hg at 25^@C , what is the molar mass of the protein? (R = 0.0821L atm mol^-1 K^-1 and 760mm Hg = 1atm)

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)

How many numbers greater than 200000 can be formed.by using 0, 1, 2, 3, 4, 5 without repetitions?

A solution of Ni(NO_3)_2 is electrolysed between platinum electrodes using a current of 5 amperes for 20 minutes. What mass of Ni is deposited at the cathode?

Calculate the molarity of each of the following solutions: 30g of Co(NO_3)_2 . 6H_2O in 4.3 L of solution.

Calculate the value of Avogardo Constant from the following data. Density of NaCl = 2.165 gcm^-3 , distance bet^n Na^+ and Cl^- in NaCl = 281 pm (molar mass of NaCl = 58.5 gmol^-1)