A constant electric current flows for 4 hours through two electrolytic cells connectedin series. Onecontain `AgNO_3` ssolutionandsecondcontains `CuCl_2` solution. During this time, 4 grams of Ag are deposited in the first cell: What is the current flowing in amperes?

A constant electric current flows for 4 hours through two electrolytic cells connectedin series. Onecontain AgNO_3 ssolutionandsecondcontains CuCl_2 solution. During this time, 4 grams of Ag are deposited in the first cell: How many grams of Cu are deposited in the second cell?

The same quantity of electricity is passed through two cells one containing AlCl3 solution and the other containing ZnCl2 solution. If 0.04 mole of Al is produced in the first cell, the number of moles of Zn produced in the second cell will be

Three electrolytic cells A, B, C containing solution of ZnSO_4, AgNO_3 and CuSO_4 , respectively are connected in series. A. steady current of 1.5 amperes was passed through them until 1.45 g of silver deposited at the cathode of cell B. How long did the current flow? What mass of copper and of zinc were deposited ?

A current of 3 A flows through certain resistance when a cell is connected across it.The potential difference across the resistance was found to be 4.8 volt. The e.m.f.of cell is 5 volt.Calculate the internal resistance of the cell.

How long does it take to deposit 100 g of Al from an electrolytic cell containing Al_(2)O_(3) using a current of 125 ampere ?

In a certain electrolysis experiment 0.79 g of Ag was deposited in one cell containing aqueous AgNO_3 solution, while 0.231 g of an unknown metal X was deposited in another cell containing aqueous XCI_2 solution in series with AgNO_3 cell. Calculate the molar mass of X. Molar mass of Ag is 107.9 g mol^(-1) .

Two electrolytic cells one containing AlCl_3 solutionand the other ontaining ZnSO_4 solution are connected in series. The same quantity of electricity is passed between the cells, Calculate the amount of Zn deposited in ZnSO_4 cell if 1.2 g of AI are deposited in AlCl_3 cell. The molar masses of Al and Zn are 27 g mol^(-1) and 65.4 g mol^(-1) respectively.

Read the following paragraph and answer the questions given below it: The resistance of a metal falls when cooled below room temperature. Many scientists believed that the value of the resistance would become constant at some very low temperature, allowing the current to flow with little or no resistance. H. K. Onnes successfully liquefied helium in 1908 by cooling it to about 4 K. In 1911, while investigating the electrical property of very pure mercury. Onnes discovered that at a temperature of 4.2 kelvin, its resistance practically vanished. This new state, on account of its extraordinary property, is now called the superconducting state and the phenomenon is called superconductivity. A superconductor, below a certain critical temperature, offers almost zero resistance to a flow of current through it. Onnes also discovered that a superconductor exhibits persistent current: once set up, the current continues to flow for a very long time without an electric potential difference driving it and without significant loss. Superconductivity is used in many diverse areas, such as magnetically levitated trains, transmission of electricity, increasing speed of computers, in MRI (magnetic resonance imaging). Name any two applications of super-conductivity.

Read the following paragraph and answer the questions given below it: The resistance of a metal falls when cooled below room temperature. Many scientists believed that the value of the resistance would become constant at some very low temperature, allowing the current to flow with little or no resistance. H. K. Onnes successfully liquefied helium in 1908 by cooling it to about 4 K. In 1911, while investigating the electrical property of very pure mercury. Onnes discovered that at a temperature of 4.2 kelvin, its resistance practically vanished. This new state, on account of its extraordinary property, is now called the superconducting state and the phenomenon is called superconductivity. A superconductor, below a certain critical temperature, offers almost zero resistance to a flow of current through it. Onnes also discovered that a superconductor exhibits persistent current: once set up, the current continues to flow for a very long time without an electric potential difference driving it and without significant loss. Superconductivity is used in many diverse areas, such as magnetically levitated trains, transmission of electricity, increasing speed of computers, in MRI (magnetic resonance imaging). At what temperature does the resistance of very pure mercury become almost zero?

Read the following paragraph and answer the questions given below it: The resistance of a metal falls when cooled below room temperature. Many scientists believed that the value of the resistance would become constant at some very low temperature, allowing the current to flow with little or no resistance. H. K. Onnes successfully liquefied helium in 1908 by cooling it to about 4 K. In 1911, while investigating the electrical property of very pure mercury. Onnes discovered that at a temperature of 4.2 kelvin, its resistance practically vanished. This new state, on account of its extraordinary property, is now called the superconducting state and the phenomenon is called superconductivity. A superconductor, below a certain critical temperature, offers almost zero resistance to a flow of current through it. Onnes also discovered that a superconductor exhibits persistent current: once set up, the current continues to flow for a very long time without an electric potential difference driving it and without significant loss. Superconductivity is used in many diverse areas, such as magnetically levitated trains, transmission of electricity, increasing speed of computers, in MRI (magnetic resonance imaging). What is a superconductor?