all please! 1. One potential source of error in this experiment is the possible

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all please!

1. One potential source of error in this experiment is the possible lack of adherence of the reduced copper to the surface of the object. This issue is not a concern with the anode, which also copper, should theoretically change by the same mass. Use the mass loss from the copper strip anode and calculate % yield from this value. Cornment on your results. 2. Your pre-lab it mentioned a AAA battery which holds a charge of 1000mA-h (milliamp hours), convert this value to units of coulombs and moles of e (show work) 3. The charge of the standard lead-acid automobile battery which helps start your car is 85 AHh (amp hours). How would the battery for your cell phone compare in relation to a car battery and a AAA rechargeable battery? Explain. 4. Aluminum is plated via a process called "Anodizing". Perform some brief research and explain how aluminum anodizing is different than the experiment you performed with copper

Explanation / Answer

Answer:

Ans 3 :

Batteries are made up of group of cells. There are two types ofcells

dry cell: The cell where the electrolyte is not freeflowing or in the form of paste. these cells are used. It containsonly this much amount of moisture so that the current may flow. Itis suitable for potable usag and there is no problem ofspilling.

wet cell: It contains a liquid electrolyte. they are notspill proof. For example lead storage battery used in cars.

Ans 4.

The surface of metals can be anodized with aluminium, in whichaluminium object serving as the anode (the positive electrode).When the current passes, oxygen at the surface of aluminium anodecreates alumininum oxide. The layer of aluminium oxide deposited onthe metals surcace, and the process is called aluminiumanodizing.

However, the said procedure if used with copper, anodizing isnot feasible. The production of copper oxide at anode, on passingthe current, is generally referred as corroded copper (green incolour). The corroded copper has no electrical conductivity and hasno protection of metal surface at all. Generally, aluminium-copperalloy is in use for copper anodizing.

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