High School

Use the given masses to calculate the amount of energy released by the following reaction:

98

252



Cf→

42

102



Mo+

56

147



Ba+3(

0

1



n) \begin{tabular}{|l|l|} \hline Californium 252 \\ 4.185815×10

−25

kg & Molybdenum 102 1.692220×10

−25

kg \\ \hline \end{tabular} \begin{tabular}{|l|} \hline Barium 147 \\ 2.439856×10

−25

kg \end{tabular} \begin{tabular}{l} Neutron \\ 1.67490×10

−27

kg \\ \hline \end{tabular} [3] 7. An antiproton (p



)slows down as it passes through a magnetic field as shown. Draw the track of the antiproton.

Answer :

Using the given masses the energy released by the given reaction is approximately 6.95×10¹⁴ joules.

To compute the energy released by the above reaction, we must first estimate the mass change and then use Einstein's mass-energy equivalency formula, E = mc².

Here, it is given that:

Mass of Cf-252 = 4.185815×10⁻²⁵ kg

Mass of Mo-102 = 1.692220×10⁻²⁵ kg

Mass of Ba-147 = 2.439856×10⁻²⁵ kg

Mass of neutron = 1.67490×10⁻²⁷ kg

Δm = (Mass of Cf-252) - (Mass of Mo-102 + Mass of Ba-147 + 3 * Mass of neutron)

Δm = (4.185815×10⁻²⁵ kg) - (1.692220×10⁻²⁵ kg + 2.439856×10⁻²⁵ kg + 3 * 1.67490×10⁻²⁷ kg)

Δm = 2.439819×10⁻²⁵ kg

E = (2.439819×10⁻²⁵ kg) * (3.00×10⁸ m/s)²

Calculating this:

E ≈ 6.95×10¹⁴ joules

Thus, the energy released by the given reaction is approximately 6.95×10¹⁴ joules.

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