Problem- a portable cd player that draws 115 milliamperes, Ask an Expert

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Problem- A portable CD player that draws 115 milliamperes of current is powered by Ni-Cd rechargeable batteries. Compute the mass of NiO2 consumed when a disk is played for 40 minutes. (Enter your answer in grams).

Please illustrate work and walk me during the problem so that I can follow and understand it. Please comprise units as well

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