Radioactive Radium ${ } ^ { 226 } \mathrm { R }$

question 123

Multiple Choice

Radioactive radium, ${ } ^ { 226 } \mathrm { R }$ , has a half-life of 1620 years. If you start with 5.00 grams of the isotope, how much will remain after 1000 years? Round your answer to two decimal places.

• A)1.91 grams
• B)4.74 grams
• C)5.00 grams
• D)2.70 grams
• E)6.00 grams

---

Definitions:

Total Revenue

The overall amount of money generated by a business from the sale of its products or services, calculated by multiplying the price per unit by the number of units sold.

Market Price

The current price at which an asset or service can be bought or sold in a particular marketplace.

Profit-maximizing

Profit-maximizing is the process or goal of a business to operate in a way that achieves the highest possible profit.

Total Revenue

The total amount of money received by a company from its sales or services before any expenses are subtracted.