5.6.1: Practice Nuclear Chemistry
- Page ID
- 236039
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Exercise \(\PageIndex{1}\)
What is the missing isotope in the reaction below? What type of reaction is it?
\[_{95}^{241}Am \rightarrow ? + _{2}^{4}He\]
- Answer
- \(_{93}^{237}Np\) It is alpha emission.
Exercise \(\PageIndex{1}\)
What is the missing isotope in the reaction below? What type of reaction is it?
\[_{28}^{58}Ni+_{1}^{1}H \rightarrow ? + _{2}^{4}He\]
- Answer
- \(_{27}^{55}Co\) It is nuclear bombardment.
Exercise \(\PageIndex{1}\)
What is the missing isotope in the reaction below? What type of reaction is it?
\[_{39}^{90}Y \rightarrow ? + _{–1}^{0}e\]
- Answer
- \(_{40}^{90}Zr\) It is beta emission.
Exercise \(\PageIndex{1}\)
What is the missing isotope in the reaction below? What type of reaction is it?
\[_{54}^{118}Xe \rightarrow ? + _{+1}^{0}e\]
- Answer
- \(_{53}^{118}I\) It is positron emission.
Exercise \(\PageIndex{1}\)
Two units used to measure absorbed dose of radiation are the rad and the gray (Gy). Their relationship is that 1 Gy = 100 rad, exactly. If a medical treatment involves the absorption of 0.45 krad, what is that in Gy?
- Answer
-
4.5 Gy
Exercise \(\PageIndex{1}\)
The units used to measure radioactivity of a sample are curies (Ci) or bequerel (Bq). Their relationship is that 1 Ci = 3.7 x 1010 Bq (2 sig dig relationship). If a radioactive sample is giving off 35 nCi, how many Bq is that?.
- Answer
-
1300 Bq
More Chapter 5 Practice
Exercise \(\PageIndex{1}\)
What is the missing isotope in the reaction below? What type of reaction is it?
\[_{24}^{51}Cr \rightarrow ? + _{–1}^{0}e\]
- Answer
- \(_{25}^{51}Mn\) It is beta emission.
Exercise \(\PageIndex{1}\)
What is the missing isotope in the reaction below? What type of reaction is it?
\[_{18}^{40}Ar+_{2}^{4}He \rightarrow ? + _{1}^{1}H\]
- Answer
- \(_{19}^{43}K\) It is nuclear bombardment.
Exercise \(\PageIndex{1}\)
What is the missing isotope in the reaction below? What type of reaction is it?
\[_{84}^{214}Po \rightarrow ? + _{2}^{4}He\]
- Answer
- \(_{82}^{210}Pb\) It is alpha emission.
Exercise \(\PageIndex{1}\)
What is the missing isotope in the reaction below? What type of reaction is it?
\[_{80}^{188}Hg \rightarrow ? + _{+1}^{0}e\]
- Answer
- \(_{79}^{188}Au\) It is positron emission.
Exercise \(\PageIndex{1}\)
Two units used to measure absorbed dose of radiation are the rad and the gray (Gy). Their relationship is that 1 Gy = 100 rad, exactly. If a medical treatment involves the absorption of 75 mrad, what is that in Gy?
- Answer
-
0.00075 Gy
Exercise \(\PageIndex{1}\)
How old (in weeks) is a sample of Ce-141 that has been around for 3.80 half-lives? The half-life of Ce-141 is 32.5 days.
- Answer
-
17.6 weeks