Chemical Equations Need to Be Balanced Not Only in Terms

question 229

Multiple Choice

Chemical equations need to be balanced not only in terms of the number of atoms, but also by the charge. In other words, just as there should be the same number of atoms before and after the arrow of an equation, there should be the same charge. What set of coefficients is necessary to balance the following chemical equation? ____ Sn²⁺ + ____ Ag → ____ Sn + _____ Ag⁺

• A)1, 2, 1, 2
• B)1, 1, 1, 2
• C)1, 2, 2, 2
• D)1, 1, 2, 1

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Definitions:

Voltage Regulators

Devices in electrical systems that maintain the output voltage at a constant level despite changes in load or input voltage.

Topping Up

The process of adding a small amount of fluid to bring a system's level to the proper volume or concentration.

Over-Charging

The act of applying too much charge to a battery, leading to potential damage or reduced lifespan.

Wet Cell Battery

Term commonly used to describe a lead-acid battery using a sulfuric acid solution as electrolyte.