A metal object is to be gold-plated by an electrolytic procedure using aqueous aucl3 electrolyte. Calculate the number of moles of gold deposited in 3.0 min by a constant current of 10. A.

Explanation:

charges passed = current x time

= 10 x 3 x 60

= 1800 C

mole of charge = 1800 / 96500

= .01865  moles

Au⁺³ contains 3 positive charges

3 mole of charge will deposit 1 mole of Au

.01865  moles  will deposit .01865 / 3 mole

= 6.2167 x 10⁻³ moles .

total distance travelled = 60 miles

total time taken =1.5 hours

average speed = total distance / total time

60 / 1.5

= 40

therefore, average speed = 40 m/h

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answer: a. same unit

explanation: