Tritium (Hydrogen-3) is prepared by bombarding Lithium-6 with neutrons. A 0.329 mg sample of Tritium has...
Tritium (Hydrogen-3) is prepared by bombarding Lithium-6 with neutrons. A 0.329 mg sample of Tritium has an activity of 2.42 Ci.
What is the decay rate and the decay constant (per second) of tritium?
Homework Answers
Activity is 2.42 Ci
the conversion factor is
Convert 2.42 Ci into dps
Hence the decay rate 
Note: dps represents disintegrations per second. It gives number of nuclei that decay in one second.
Mass of tritium sample is 0.329 mg or 
Molar mass of tritium is 3 g/mol
Number of moles of tritium 
Number of tritium nuclei 
The decay rate 
Hence, the decay constant is 
Add Answer to:
Tritium (Hydrogen-3) is prepared by bombarding Lithium-6 with
neutrons. A 0.329 mg sample of Tritium has...
Tritium, 31H, is a radioactive nucleus of hydrogen. It decays by beta emission with a 1/2...
Tritium, 31H, is a radioactive nucleus of hydrogen. It decays by beta emission with a 1/2 life of 12.3 years. What is the decay constant in (in/s)? What is the activity (in Ci) of a sample containing 2.5 micrograms of tritium? The atomic mass of 31H is 3.02 amu.
(10 points) A lithium nucleus (3 protons and 4 neutrons) accelerates to the right due to...
(10 points) A lithium nucleus (3 protons and 4 neutrons) accelerates to the right due to electric forces. 7x 10-3 kg/mole 6x 1023 atoms/mole The initial magnitude of the acceleration is 3x1013 meters per second per second (m/s-). mu (a) What is the direction of the electric field that acts on the lithium nucleus? (b) What is the magnitude of the electric field that acts on the lithium nucleus? Be quantitative (that is, give a number). Explain briefly. (c) If...
A freshly prepared sample of a certain radioactive isotope has an activity of 10.0 mCi. After...
A freshly prepared sample of a certain radioactive isotope has an activity of 10.0 mCi. After 3.80 h, the activity is 8.30 mCi. (a) Find the decay constant and half-life of the isotope. (b) How many atoms of the isotope were contained in the freshly prepared sample? (c) What is the sample's activity 30 h after it is prepared?
The following questions pertain to radioactive decay, which are first-order reactions. • Decay constant = rate...
The following questions pertain to radioactive decay, which are first-order reactions. • Decay constant = rate constant • Activity is the number of nuclei (N) decaying per unit time 1. a. What is the decay constant for the B emission of 3H given ty = 12.26 yr? b. What fraction of tritium atoms in a sample remains after 100.0 yr? c. If the original number of tritium atoms was 1.50 x 1018, what is the number remaining? and that a....
Each atom in a sample of lithium (Z = 3, atomic mass 6.941 u) has all...
Each atom in a sample of lithium (Z = 3, atomic mass 6.941 u) has all of its electrons removed. If a charge of magnitude 1.0 mC was collected in this way, what is the mass of the lithium sample?
6. A 1.07 mg sample of a compound was dissolved in 78.1 mg of camphor. The...
6. A 1.07 mg sample of a compound was dissolved in 78.1 mg of camphor. The resulting solution melted at 176.0 C. What is the molecular mass of the compound? The melting point of pure camphor is 179.5 C. The freezing-point-depression constant for camphor Kf is 40.0 C/m. 7. A solution is prepared by dissolving 5.88 g of an unknown nonelectrolyte in enough water to make 0.355 L of solution. The osmotic pressure of the solution is 1.21 atm at...
t kena lan LAST, FIRST, 6. Doubly ionized lithium, Lit2 which has 3 protons is in...
t kena lan LAST, FIRST, 6. Doubly ionized lithium, Lit2 which has 3 protons is in n 3 and excited state. All energies are in eV 2 state, the second (a) What is the energy value of the second excited state? (5 Pts) (b) It absorbed a photon making a transition from n = 3 to n = 5 state what is the wavelength of the photon absorbed? (5 Pts.) What are the possible final I values and the associated...
12. [6] A person receives a drug intravenously at a rate of 3 mg. per hour....
12. [6] A person receives a drug intravenously at a rate of 3 mg. per hour. The drug is eliminated from the body at a rate proportional to the amount present with a constant of proportionality k-0.4. (a) Write a differential equation for the quantity, Q, of the drug present in the body after t hours. (b) Find the general solution to the differential equation in (a)
12. [6] A person receives a drug intravenously at a rate of 3...
Phosphorus-32 (P-32) is used in nuclear medicine as therapeutic agent in the treatment of several diseases. P-32 has a half life of 14.3 days and decays directly to its ground state by emitting a beta...
Phosphorus-32 (P-32) is used in nuclear medicine as therapeutic
agent in the treatment of several diseases. P-32 has a half life of
14.3 days and decays directly to its ground state by emitting a
beta-minus particle. The decay table for P-32 is given. There are
no excited energy states or other radiation emitted during this
decay; therefore, P-32 is referred to as a "pure beta emitter.
A P-32 sample is prepared in the manufacturing site with
an initial activity of...
A sample has a Subscript 6 Superscript 14 Baseline Upper C activity of 0.0060 Bq per...
A sample has a Subscript 6 Superscript 14 Baseline Upper C activity of 0.0060 Bq per gram of carbon. (a) Find the age of the sample, assuming that the activity per gram of carbon in a living organism has been constant at a value of 0.23 Bq. (b) Evidence suggests that the value of 0.23 Bq might have been as much as 23% larger. Repeat part (a), taking into account this 23% increase.
(10 points) A lithium nucleus (3 protons and 4 neutrons) accelerates to the right due to electric forces. 7x 10-3 kg/mole 6x 1023 atoms/mole The initial magnitude of the acceleration is 3x1013 meters per second per second (m/s-). mu (a) What is the direction of the electric field that acts on the lithium nucleus? (b) What is the magnitude of the electric field that acts on the lithium nucleus? Be quantitative (that is, give a number). Explain briefly. (c) If...
The following questions pertain to radioactive decay, which are first-order reactions. • Decay constant = rate constant • Activity is the number of nuclei (N) decaying per unit time 1. a. What is the decay constant for the B emission of 3H given ty = 12.26 yr? b. What fraction of tritium atoms in a sample remains after 100.0 yr? c. If the original number of tritium atoms was 1.50 x 1018, what is the number remaining? and that a....
t kena lan LAST, FIRST, 6. Doubly ionized lithium, Lit2 which has 3 protons is in n 3 and excited state. All energies are in eV 2 state, the second (a) What is the energy value of the second excited state? (5 Pts) (b) It absorbed a photon making a transition from n = 3 to n = 5 state what is the wavelength of the photon absorbed? (5 Pts.) What are the possible final I values and the associated...
12. [6] A person receives a drug intravenously at a rate of 3 mg. per hour. The drug is eliminated from the body at a rate proportional to the amount present with a constant of proportionality k-0.4. (a) Write a differential equation for the quantity, Q, of the drug present in the body after t hours. (b) Find the general solution to the differential equation in (a)
12. [6] A person receives a drug intravenously at a rate of 3...
Phosphorus-32 (P-32) is used in nuclear medicine as therapeutic
agent in the treatment of several diseases. P-32 has a half life of
14.3 days and decays directly to its ground state by emitting a
beta-minus particle. The decay table for P-32 is given. There are
no excited energy states or other radiation emitted during this
decay; therefore, P-32 is referred to as a "pure beta emitter.
A P-32 sample is prepared in the manufacturing site with
an initial activity of...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago