It Is Interesting to Compare the Energy Produced by Fusion ${ } ^ { 2 } \mathrm { H } + { } ^ { 2 } \mathrm { H } \rightarrow { } ^ { 4 } \mathrm { He } ?$

question 66

Multiple Choice

It is interesting to compare the energy produced by fusion to that produced by combustion. When carbon burns to produce carbon dioxide, 395 kJ/mol of energy is released. Approximately how much greater is the energy per mole of deuterium that is released in the following fusion process: ${ } ^ { 2 } \mathrm { H } + { } ^ { 2 } \mathrm { H } \rightarrow { } ^ { 4 } \mathrm { He } ?$ The atomic masses are 2.0104 g/mol for deuterium and 4.0026 g/mol for helium. Be sure to keep track of the units and get them correct; remember, 1 kJ = 1,000 kg m²/s².

• A) 10²
• B) 10⁴
• C) 10⁶
• D) 10⁸
• E) 10¹⁰

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Definitions:

Sampling Distribution

The probability distribution of a statistic based on a random sample.

Freshman Class

A group of students who are in their first year at a secondary or post-secondary educational institution.

Sampling Distribution

The probability dispersion of a particular statistic, facilitated by a randomly selected sample.

Z-Value

A statistical measure that quantifies the number of standard deviations a data point is from the mean of a data set.