A 14 G Sample of Calcium Is Reacted with 3

question 113

Multiple Choice

A 1.4 g sample of calcium is reacted with 3.2 g of oxygen.The only product after the reaction is 1.96 g of CaO.How many grams of oxygen remains unreacted?

• A)0.56 g
• B)0.224 g
• C)2.64 g
• D)0.264 g
• E)0.203 g

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Definitions:

Power Factor

A dimensionless number between 0 and 1 that measures the efficiency of an electrical system, calculated as the ratio of real power to apparent power.

Voltage

The electrical potential difference between two points in a circuit, measuring the energy required to move a unit charge between those points.

Current

The flow of electric charge through a conductor, a fundamental concept in electrical and electronic circuits.

Wye-Connected

A method of connecting three-phase motors or transformers where the ends are connected to form a "Y" shape, facilitating the use of both line and phase voltages.