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College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000

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BuyFindarrow_forward

College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000
Textbook Problem

(a) Neutron activation of sodium, which is 100% 23Na, produces 24Na, which is used in some heart scans, as seen in Table 32.1. The equation for the reaction is 23 Na + n 24 Na + γ . Find its energy output, given the mass of 24Na is 23.990962 u.

(b) What mass at 24Na produces the needed 5.0−mCi activity, given its half−life is 15.0 h?

To determine

(a)

The energy output of given reaction.

Explanation

Given:

The masses of N23a , N24a and n are

  N23a=22.989769uN24a=23.990961un=1.008665u.

Formula used:

The formula used to calculate energy output is

  E=Δm·c2

To determine

(b)

The mass of the technetium.

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