Use your knowledge of radioactive decay to fill in the missing parts of each nuclear equation above.

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# The Carbon-Nitrogen Cycle

**3-4 Apply**

**The Carbon-Nitrogen Cycle**

Hydrogen nuclei are involved in a process known as the carbon-nitrogen cycle. The six reactions in this decay series are presented below. The net result of the carbon-nitrogen cycle is that four hydrogen atoms are combined to produce one helium atom. Reactions 2 and 5 involve decay particles called positrons (\(^0_{+1}e\)). Positrons are essentially positively charged beta particles.

**Reaction 1:**  
\[^1_1H + {}^{12}_6C \rightarrow \square + {}^0_0\gamma\]

**Reaction 2:**  
\[{}^{13}_7N \rightarrow \square + {}^0_{+1}e\]

**Reaction 3:**  
\[\square \rightarrow {}^{14}_7N + {}^0_0\gamma\]

**Reaction 4:**  
\[{}^{14}_7N \rightarrow \square + {}^0_0\gamma\]

**Reaction 5:**  
\[{}^{15}_8O \rightarrow \square + {}^0_{+1}e\]

**Reaction 6:**  
\[^1_1H + {}^{15}_7N \rightarrow \square + {}^4_2He + {}^0_0\gamma\]

1. Use your knowledge of radioactive decay to fill in the missing parts of each nuclear equation above.

2. Which type of radioactive particle was emitted by the following isotopes?
   a. \(^{13}_7N\)  
   b. \(^{15}_7N\)  

In the cycle, what happens to the nitrogen-13 nuclei produced in the first reaction?

What happens to the atom produced in the sixth reaction?
Transcribed Image Text:# The Carbon-Nitrogen Cycle **3-4 Apply** **The Carbon-Nitrogen Cycle** Hydrogen nuclei are involved in a process known as the carbon-nitrogen cycle. The six reactions in this decay series are presented below. The net result of the carbon-nitrogen cycle is that four hydrogen atoms are combined to produce one helium atom. Reactions 2 and 5 involve decay particles called positrons (\(^0_{+1}e\)). Positrons are essentially positively charged beta particles. **Reaction 1:** \[^1_1H + {}^{12}_6C \rightarrow \square + {}^0_0\gamma\] **Reaction 2:** \[{}^{13}_7N \rightarrow \square + {}^0_{+1}e\] **Reaction 3:** \[\square \rightarrow {}^{14}_7N + {}^0_0\gamma\] **Reaction 4:** \[{}^{14}_7N \rightarrow \square + {}^0_0\gamma\] **Reaction 5:** \[{}^{15}_8O \rightarrow \square + {}^0_{+1}e\] **Reaction 6:** \[^1_1H + {}^{15}_7N \rightarrow \square + {}^4_2He + {}^0_0\gamma\] 1. Use your knowledge of radioactive decay to fill in the missing parts of each nuclear equation above. 2. Which type of radioactive particle was emitted by the following isotopes? a. \(^{13}_7N\) b. \(^{15}_7N\) In the cycle, what happens to the nitrogen-13 nuclei produced in the first reaction? What happens to the atom produced in the sixth reaction?
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