Determine How Much Energy Is Released When Thorium-230 Decays According ${ }^{230} \mathrm{Th} \rightarrow{ }^{4} \mathrm{He}+{ }^{226} \mathrm{Ra}$

question 79

Multiple Choice

Determine how much energy is released when thorium-230 decays according to ${ }^{230} \mathrm{Th} \rightarrow{ }^{4} \mathrm{He}+{ }^{226} \mathrm{Ra}$ . [Atomic masses: thorium-230 = 230.033127 amu; helium-4 = 4.002603 amu; radium-226 = 226.025403 amu]

• A) 3.98 * 10⁹ kJ/mol
• B) 4.60 * 10⁸ kJ/mol
• C) 7.20 * 10¹¹ kJ/mol
• D) 4.90 * 10⁹ kJ/mol
• E) 7.15 * 10¹¹ kJ/mol

Understand the historical context of CEO compensation dynamics in the United States.

Gain proficiency in completing economic tables relating to output, prices, revenues, and costs.

Calculate optimal output levels for firms under different market structures.

Understand the graphical representation of firm behavior including demand, marginal revenue, marginal cost, and average total cost curves.

---

Definitions:

Character Constant

A fixed value representing a specific character in programming, usually enclosed in single quotes, such as 'a' or '3'.

Significant Digits

The number of digits in a number that contribute to its accuracy, usually starting from the first non-zero digit.

Double Variable

A type of variable in programming that can hold a double-precision 64-bit IEEE 754 floating point.

Equivalent

Describes entities that are equal in value, function, or meaning even if they are not the same object or instance.