A Ruby Contains 52

question 26

Multiple Choice

A ruby contains 52.7% aluminum,47.1% oxygen,and traces of chromium.If the ruby contains 0.125 g of aluminum,what is the mass of the gemstone?

• A)0.0659 g
• B)0.125 g
• C)0.237 g
• D)0.265 g
• E)0.625 g

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Definitions:

Equivalent Interest Rate

A rate that converts interest rates of various compounding periods into an annual rate for comparison purposes.

Nearest 0.01%

Rounding a percentage to the closest one-hundredth of a percent.

Nearest 0.01%

Rounding a number or percentage to the closest hundredth of a percent for precision.

Emotions

Complex psychological states involving physiological arousal, feelings, cognitive processes, and behavioral reactions.