Uranium-235 has a half-life of 7.04 × 108 years.How many years will it take for 99.9% of a U-235 sample to decay?

A) 7.0 × 105 yr B) 1.0 × 106 yr C) 4.7 × 109 yr D) 4.9 × 109 yr E) 7.0 × 109 yr A) 7.0 × 105 yr B) 1.0 × 106 yr C) 4.7 × 109 yr D) 4.9 × 109 yr E) 7.0 × 109 yr

How many atoms decay in 12 hours in a 3.5 × 10−8 Ci source? (1 Ci = 3.700 × 1010 atom/s)

A) 4.1 × 10−14 atoms B) 1.6 × 104 atoms C) 5.0 × 104 atoms D) 5.6 × 107 atoms E) 4.6 × 1022 atoms A) 4.1 × 10−14 atoms B) 1.6 × 104 atoms C) 5.0 × 104 atoms D) 5.6 × 107 atoms E) 4.6 × 1022 atoms

Exam 18: Nuclear Reactions

Explore all topics

A 1.00 g sample of carbon taken from a living plant has an activity of 13.6 atoms/min.If 1.00 g of an organic sample is found to have an activity of 6.27 atoms/min,what is the age of the sample? The decay constant of ${ }_{6}^{14} \mathrm{C}$ is 1.21 × 10−⁴ yr−¹.

(Multiple Choice)

4.9/5

(41)

Question 41

Complete the following fusion reaction. ${ }_{1}^{3} \mathrm{H}+{ }_{3}^{7} \mathrm{Li} \rightarrow{ }_{0}^{1} n+$ ------

(Multiple Choice)

4.7/5

(37)

Question 42

Uranium-235 has a half-life of 7.04 × 10⁸ years.How many years will it take for 99.9% of a U-235 sample to decay?

(Multiple Choice)

4.9/5

(40)

Question 43

The following fusion reaction releases 2.16 × 10⁹ kJ per mole of deuterium reacted. ${ }_{1}^{2} \mathrm{H}+{ }_{3}^{6} \mathrm{Li} \rightarrow 2{ }_{2}^{4} \mathrm{He}$ How much mass is lost in the reaction per mole of deuterium reacted?

(Multiple Choice)

4.8/5

(38)

Question 44

Which of the following types of radiation will pass through a piece of paper,but will be stopped by 0.5 cm of lead?

(Multiple Choice)

4.7/5

(33)

Question 45

A 1.00 g sample of ${ }_{32}^{66} \mathrm{Ge}$ decays to 0.87 g in 1.9 hr.What is the half-life of ${ }_{32}^{66} \mathrm{Ge}$ ?

(Multiple Choice)

4.9/5

(37)

Question 46

If a nucleus emits an alpha particle,its mass number

(Multiple Choice)

4.8/5

(31)

Question 47

The half-life of mercury-203 is 46.6 days.What percentage of mercury-203 remains in a sample after 365 days?

(Multiple Choice)

4.8/5

(42)

Question 48

Write a balanced nuclear equation for the positron emission reaction undergone by ${ }_{6}^{11} \mathrm{C}$ .

(Multiple Choice)

4.8/5

(41)

Question 49

What element is produced by the alpha decay of ${ }_{83}^{210} \mathrm{Bi}$ ?

(Multiple Choice)

4.9/5

(27)

Question 50

How many atoms decay in 12 hours in a 3.5 × 10−⁸ Ci source? (1 Ci = 3.700 × 10¹⁰ atom/s)

(Multiple Choice)

4.7/5

(27)

Question 51

Showing 41 - 51 of 51

A 1.00 g sample of carbon taken from a living plant has an activity of 13.6 atoms/min.If 1.00 g of an organic sample is found to have an activity of 6.27 atoms/min,what is the age of the sample? The decay constant of ${ }_{6}^{14} \mathrm{C}$ is 1.21 × 10−⁴ yr−¹.

Complete the following fusion reaction. ${ }_{1}^{3} \mathrm{H}+{ }_{3}^{7} \mathrm{Li} \rightarrow{ }_{0}^{1} n+$ ------

Uranium-235 has a half-life of 7.04 × 10⁸ years.How many years will it take for 99.9% of a U-235 sample to decay?

The following fusion reaction releases 2.16 × 10⁹ kJ per mole of deuterium reacted. ${ }_{1}^{2} \mathrm{H}+{ }_{3}^{6} \mathrm{Li} \rightarrow 2{ }_{2}^{4} \mathrm{He}$ How much mass is lost in the reaction per mole of deuterium reacted?

Which of the following types of radiation will pass through a piece of paper,but will be stopped by 0.5 cm of lead?

A 1.00 g sample of ${ }_{32}^{66} \mathrm{Ge}$ decays to 0.87 g in 1.9 hr.What is the half-life of ${ }_{32}^{66} \mathrm{Ge}$ ?

If a nucleus emits an alpha particle,its mass number

The half-life of mercury-203 is 46.6 days.What percentage of mercury-203 remains in a sample after 365 days?

Write a balanced nuclear equation for the positron emission reaction undergone by ${ }_{6}^{11} \mathrm{C}$ .

What element is produced by the alpha decay of ${ }_{83}^{210} \mathrm{Bi}$ ?

How many atoms decay in 12 hours in a 3.5 × 10−⁸ Ci source? (1 Ci = 3.700 × 10¹⁰ atom/s)

Matter and Measurements

Atoms, molecules, and Ions

Mass Relations in Chemistry;stoichiometry

Reactions in Aqueous Solution

Gases

Electronic Structure and the Periodic Table

Covalent Bonding

Thermochemistry

Liquids and Solids

Solutions

Rate of Reaction

Gaseous Chemical Equilibrium

Acids and Bases

Equilibria in Acid-Base Solutions

Complex Ion and Precipitation Equilibria

Spontaneity of Reaction

Electrochemistry

Complex Ions

Chemistry of the Metals

Chemistry of the Nonmetals

Organic Chemistry

Organic Polymers, natural and Synthetic

Filters

Exam 18: Nuclear Reactions

A 1.00 g sample of carbon taken from a living plant has an activity of 13.6 atoms/min.If 1.00 g of an organic sample is found to have an activity of 6.27 atoms/min,what is the age of the sample? The decay constant of 614C { }_{6}^{14} \mathrm{C} 614​C is 1.21 × 10−4 yr−1.

Complete the following fusion reaction. 13H+37Li→01n+{ }_{1}^{3} \mathrm{H}+{ }_{3}^{7} \mathrm{Li} \rightarrow{ }_{0}^{1} n+13​H+37​Li→01​n+ ------

Uranium-235 has a half-life of 7.04 × 108 years.How many years will it take for 99.9% of a U-235 sample to decay?

The following fusion reaction releases 2.16 × 109 kJ per mole of deuterium reacted. 12H+36Li→224He{ }_{1}^{2} \mathrm{H}+{ }_{3}^{6} \mathrm{Li} \rightarrow 2{ }_{2}^{4} \mathrm{He}12​H+36​Li→224​He How much mass is lost in the reaction per mole of deuterium reacted?

Which of the following types of radiation will pass through a piece of paper,but will be stopped by 0.5 cm of lead?

A 1.00 g sample of 3266Ge { }_{32}^{66} \mathrm{Ge} 3266​Ge decays to 0.87 g in 1.9 hr.What is the half-life of 3266Ge { }_{32}^{66} \mathrm{Ge} 3266​Ge ?

If a nucleus emits an alpha particle,its mass number

The half-life of mercury-203 is 46.6 days.What percentage of mercury-203 remains in a sample after 365 days?

Write a balanced nuclear equation for the positron emission reaction undergone by 611C{ }_{6}^{11} \mathrm{C}611​C .

What element is produced by the alpha decay of 83210Bi{ }_{83}^{210} \mathrm{Bi}83210​Bi ?

How many atoms decay in 12 hours in a 3.5 × 10−8 Ci source? (1 Ci = 3.700 × 1010 atom/s)

Matter and Measurements

Atoms, molecules, and Ions

Mass Relations in Chemistry;stoichiometry

Reactions in Aqueous Solution

Gases

Electronic Structure and the Periodic Table

Covalent Bonding

Thermochemistry

Liquids and Solids

Solutions

Rate of Reaction

Gaseous Chemical Equilibrium

Acids and Bases

Equilibria in Acid-Base Solutions

Complex Ion and Precipitation Equilibria

Spontaneity of Reaction

Electrochemistry

Complex Ions

Chemistry of the Metals

Chemistry of the Nonmetals

Organic Chemistry

Organic Polymers, natural and Synthetic

Filters

A 1.00 g sample of carbon taken from a living plant has an activity of 13.6 atoms/min.If 1.00 g of an organic sample is found to have an activity of 6.27 atoms/min,what is the age of the sample? The decay constant of ${ }_{6}^{14} \mathrm{C}$ is 1.21 × 10−⁴ yr−¹.

Complete the following fusion reaction. ${ }_{1}^{3} \mathrm{H}+{ }_{3}^{7} \mathrm{Li} \rightarrow{ }_{0}^{1} n+$ ------

Uranium-235 has a half-life of 7.04 × 10⁸ years.How many years will it take for 99.9% of a U-235 sample to decay?

The following fusion reaction releases 2.16 × 10⁹ kJ per mole of deuterium reacted. ${ }_{1}^{2} \mathrm{H}+{ }_{3}^{6} \mathrm{Li} \rightarrow 2{ }_{2}^{4} \mathrm{He}$ How much mass is lost in the reaction per mole of deuterium reacted?

A 1.00 g sample of ${ }_{32}^{66} \mathrm{Ge}$ decays to 0.87 g in 1.9 hr.What is the half-life of ${ }_{32}^{66} \mathrm{Ge}$ ?

Write a balanced nuclear equation for the positron emission reaction undergone by ${ }_{6}^{11} \mathrm{C}$ .

What element is produced by the alpha decay of ${ }_{83}^{210} \mathrm{Bi}$ ?

How many atoms decay in 12 hours in a 3.5 × 10−⁸ Ci source? (1 Ci = 3.700 × 10¹⁰ atom/s)