Chapter 42: Q.47 (page 1237)
What is the age in years of a bone in which the ratio is measured to be?
Short Answer
The age of bone isYears
Chapter 42: Q.47 (page 1237)
What is the age in years of a bone in which the ratio is measured to be?
The age of bone isYears
All the tools & learning materials you need for study success - in one app.
Get started for freeThe element gallium has two stable isotopes: 69 Ga with an atomic mass of 68.92 u and 71 Ga with an atomic mass of 70.92 u. A periodic table shows that the chemical atomic mass of gallium is 69.72 u. What is the percent abundance of 69 Ga?
The radioactive hydrogen isotope 3H, called tritium, has a
half-life of 12 years.
a. What are the decay mode and the daughter nucleus of tritium?
b. What are the lifetime and the decay rate of tritium?
The radium isotope , an alpha emitter, has a half-life of localid="1650483334573" . You happen to have a localid="1650483350108" cube of , so you decide to use it to boil water for tea. You fill a well-insulated container with of water at and drop in the cube of radium. How long will it take the water to boil?
Nucleus A decays into nucleus B with a half-life of 10 s. At
t = 0 s, there are 1000 A nuclei and no B nuclei. At what time
will there be 750 B nuclei?
Stars are powered by nuclear reactions that fuse hydrogen into helium. The fate of many stars, once most of the hydrogen is used up, is to collapse, under gravitational pull, into a neutron star. The force of gravity becomes so large that protons and electrons are fused into neutrons in the reaction . The entire star is then a tightly packed ball of neutrons with the density of nuclear matter.
a. Suppose the sun collapses into a neutron star. What will its radius be? Give your answer in .
b. The sun's rotation period is now 27 days. What will its rotation period be after it collapses?
Rapidly rotating neutron stars emit pulses of radio waves at the rotation frequency and are known as pulsars.
What do you think about this solution?
We value your feedback to improve our textbook solutions.