How Many Kilowatt

question 21

Multiple Choice

How many kilowatt . hours of energy are released from 25 g of deuterium fuel in the fusion reaction: where the masses are = 2.014 102 u and = 4.002 603 u. Notes: Ignore the energy carried off by the gamma ray.
Conversion factors: 1 kWh = 3.600 × 10⁶ J; 1 eV = 1.602 × 10^-19 J.

• A)1 × 10⁶ kWh
• B)2 × 10⁶ kWh
• C)3 × 10⁶ kWh
• D)4 × 10⁶ kWh
• E)5 × 10⁶ kWh

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Definitions:

Least Common Multiple

The smallest positive integer that is a multiple of two or more integers.

Expressions

Mathematical phrases that can represent numbers, operations, and/or variables but do not include an equality sign.

Expressions

Mathematical phrases that can contain numbers, variables, operators and can be evaluated to a value.

Complex Fraction

A fraction in which the numerator, the denominator, or both contain fractions themselves.