Suppose You Find a Rock That Contains 10 Micrograms of Radioactive

question 102

Multiple Choice

Suppose you find a rock that contains 10 micrograms of radioactive potassium- 40, which has a half- life of 1.25 billion years. By measuring the amount of its decay product (argon- 40) present in the rock, you conclude that there must have been 80 micrograms of potassium- 40 when the rock solidified. How old is the rock?

• A)1)25 billion years
• B)5)0 billion years
• C)2)5 billion years
• D)3)75 billion years

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Definitions:

Raw Materials Purchased

The complete expense of raw materials purchased by a company for production purposes over a given period.

Raw Materials Inventories

Stocks of unprocessed materials that are used in the manufacturing process to produce finished goods.

Controlling

In management, the process of monitoring performance and taking action to ensure desired outcomes.

Directing

In management, directing refers to the process of guiding, leading, and overseeing employees to achieve organizational goals.