Calculate how long it will take to deposit 1.0 g of chromium when a current of 1.25A flows through a solution of chromium sulphate.
Calculate the molarity of a solution containing 0.5 g of NaOH dissolved in 500 "cm"^(3) of the solution?
Calculate the volume of 0.015M HCl solution required to prepare 250ml of a 5.25 (10)-3 M HCl solution ?
calculate the mass of urea ( NH_2CONH_2 ) required in making 2.5kg of 0.25 mole aqueous solution.
The face centered cubic cell of platinum ha an edge length of 0.392nm. Calculate the density of platinum (g//cm^(3)) : ("Atomic mass": Pt=195)
Electrolysis can be used to determine atomic masses. A current of 0.550 A deposits 0.55g of a certain metal in 100 minutes. Calculate the atomic mass of the metal if eq. mass=mole. Mass/3
Calculate the amount of benzoic acid (C_6H_5COOH) required for preparing 250 mL of 0.15 M solution in methanol.
Calculate the mass of 2.5g atom of oxygen
How many minutes will it take to plate out 5.2g of cr from a Cr_2(SO_4)_3 solution using a current of 9.65 A ? (Atomic mass:Cr=52.0)
How many grams of Cr are deposited in the electrolysis of solution of Cr (NO_3)_3 in the same time that it takes to deposite 0.54g of Ag in a silver coulometer arranged in series with the Cr(NO_3)_3 cell? (Atomic mass: Cr=52.0,Ag=108)
