Chemistry Questions
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What is the missing part of the equation below?238^92U -> 234^90Th
Carbon-14 has a half-life of 5,730 years. If the age of an object older than 50,000 years cannot be determined by radiocarbon dating, then
Alpha-emitting substances, such as radon gas, can be a serious health hazard only if
What type of nuclear decay releases energy but not a particle?
When gamma radiation is released from a radioactive isotope, the atomic number
What type of radiation is emitted when polonium-212 forms lead-208?
The half-life of tritium, or hydrogen-3, is 12.32 years. After about 24.6 years, how much of a sample of tritium will remain unchanged?
how can you change the products made in the burning of hydrocarbon fuels?
how much of the atmosphere today is nitrogen?
how much of the atmosphere today is oxygen?
If a radioactive sample has decayed until only one eighth of the original sample remains, how many half-lives elapsed?
The half-life of cobalt-60 is 5.3 years. What fraction of the sample remains after 21.2 years?
What is the effect on the mass number and charge of a nucleus when it loses an alpha particle?
The most penetrating form of nuclear radiation is _____
When a beta particle is emitted, the mass number of a nucleus _____
Write the equation for the transmutation that occurs when an alpha particles combines with an oxygen-16 isotope, emitting a proton.
Transmutation does not occur in which of these nuclear processes?
Which of the following is a radioisotope commonly used in dating archaeological artifacts?
Write the equation for the transmutation that occurs when an alpha particles combines with an nitrogen-14 isotope, emitting a proton.
Nuclear power plants generate electricity from _____