Electrolysis of 200 ML of a Solution of an Unknown

question 7

Multiple Choice

Electrolysis of 200 mL of a solution of an unknown metal increased the cathode mass by 0.0434 grams when a current of 0.50 A passed through the cell for 5 minutes.Further research determined the charge on the metal to be +2.What is the identity of the metal?

• A)Rg
• B)Si
• C)Fe
• D)Cd
• E)Mn

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Definitions:

Epiglottis

A leaf-shaped flap of cartilage located behind the tongue, which closes over the windpipe during swallowing to prevent food from entering the airway.

Pharyngeal

Pertaining to the pharynx, the region of the throat that sits behind the mouth and nasal cavity.

Esophageal

Relating to the esophagus, the muscular tube that connects the throat (pharynx) with the stomach and transports food and liquids.

Gastric

Pertains to the stomach and its role in digestion, including the secretion of gastric juices that break down food.