A sample of a igneous rock contains small amounts of radioactive potassium and argon. Using the ratio of 40Ar to 40K, it is determined that only 25% of the original parent isotope remained. How old is this rock sample?
Q: A paleontologist estimates that when a particular rock formed, it contained 12 mg of the radioactive…
A: Earlier, paleontologists were only able to understand biological succession, they weren't aware of…
Q: Growth and Decay 1. Discussion of Theory 2. Three Examples
A: The Decay theory is a theory that proposes that memory fades due to the mere passage of time.…
Q: Imagine that scientists have found traces of liquid water on the surface of Mars. Could this…
A: Water is a polar molecule and a solvent that can dissolve more substances than any other solvent on…
Q: The Miller-Urey experiment simulated compounds present in the atmosphere of early Earth, lightning,…
A: Miller Use four compounds or particle in his experiment these are water, methane, ammonia and…
Q: The nucleotide composition of five DNA segments were determined. Which of these DNA segments is…
A: The correct answer is option 2 The segment with 24%C content.
Q: Which of the following techniques examines the decay of carbo an object? O A. Radiometric dating O…
A: For the determination of the age of living or nonliving materials the scientist usually determined…
Q: If there is 10 μmol of the radioactive isotope 32P (half-life 14 days) at t = 0, how much 32P will…
A: In the process of radioactive decay, a radioactive unstable nucleus loses its energy by radiation.…
Q: The following are the six most common elements in the human body: oxygen, carbon, hydrogen,…
A: An element is a substance consisting only of atoms that all have the same numbers of protons.
Q: Describe the properties of a radioisotope.
A: Radioisotopes are radioactive isotopes of an element. They can also be defined as atoms that contain…
Q: The fact that different samples of the same compound always have the same percent composition of…
A: Different laws define the amount of solute and solvent in a solution.
Q: In the 1950s, scientists Miller and Urey conducted a classic experiment in which water, methane,…
A: Evolution is the study of origin of earth, origin of life on earth and relationship between…
Q: Radiometric decay of carbon-14 would be used in dating sedimentary rock. a trace fossil. an insect…
A: Radiometric decay is a method dating substances of possible majority of organic content. Principle:…
Q: 100 No. of Daughther atoms No. of Atoms 50 25 12.5 No. of Parent atoms 6.25 12 4. No. of half life…
A: The decay of 14C, a radioactive isotope of carbon with a fairly long half-life, is used in carbon…
Q: Volcanic ash can be used to date fossil finds because each time it is expelled by an eruption it has…
A: The answer is True
Q: What is the unknown isotope in the following fission reaction: n + 235U → 131I + ? + 3nA. 86Rb…
A: Nuclear fission is a process in nuclear physics in which the nucleus of an atom splits into two or…
Q: Some scientists have speculated that life forms elsewhere in the universe could be based on silicon,…
A: Scientists must categorize organisms since the Earth has about 10 million distinct types of life…
Q: Ch. 16-2 Radiometric dating does not measure the age of an individual atom. It is a measure of the…
A: Radioactive dating helps to establish the age of the sample based on its atomic composition, and it…
Q: his homework question I have been having difficulty figuring out what the atomic mass is for Gi + ^2…
A: These two elements are termed isotopes of each other when they have the same number of protons,…
Q: A fossil is found to contain the radioactive parent and daughter isotopes uranium 235U, and lead…
A: INTRODUCTION The determination of the relative age of a rock is predicated on the principle of…
Q: ich of the following questions about the origin of life on Earth is most scientifically testable? *…
A: Different theories have been put forward to explain the origin of life on earth. Some of those…
Q: The two elements are in the same group, with Element Q at the top of the group and Element Rat the…
A: The two elements are in same period with element R the first element and E is the last element.
Q: Could Hershey and Chase have used a radioactive isotope of carbon instead of 32P? Why or why not?
A: No. They could not have used radioactive isotope of 32P because both DNA and proteins contain carbon…
Q: The most useful method for dating ancient calcium rich cave deposits would be Group of answer…
A: Answer :- Option (D) is correct. - Uranium-Thorium Dating.
Q: In the 1950s, Miller and Urey obtained support for the hypothesis that simple organic molecules…
A: Stanley Miller and Harold Urey conducted an experiment in 1953 to put Oparin and Haldane's theories…
Q: when solar radiation crosses space and moves towards earth.it consists of many types of radiation…
A: Answer - The Electromagnetic radiation (EMR) consists of waves . The waves contains electric and…
Q: diatomaceous earth
A: Diatoms are the single celled algae which has a wall of silica. Diatoms are photosynthetic , I.e…
Q: All of the following materials can be radiocarbon dated except Group of answer choices A: Seeds B:…
A: Radiocarbon dating It is a method that provides objective age estimates for carbon based materials…
Q: Radiometric dating does not measure the age of an individual atom. It is a measure of the age of a…
A: The technique, that is used to determine the age of materials or date materials. This technique…
Q: Alpha Decay (Emission) Beta Decay (Emission) 220 Fr OL a + 216 At 16 N → B+ "O 87 85 What are the…
A: Alpha decay: Beta decay:
Q: 14) Uranium-238 ( 92º) decays to form thorium-234 ( 90h) with a half-life of 4.5 x 10° years. How…
A: The half-life life of the uranium-238 takes 4.5×109 years to decay to form the thorium-234.
Q: Which parent isotope is most useful for dating samples that are greater than 100 million years old?…
A: Radioactive decay is a process in which the unstable isotopes (natural) emit radioactive particles.…
Q: Radiometric dating ... Group of answer choices A: is based on the scientific observation that…
A: Answer E) all of these answers are true
Q: trogen is an isotope of nitrogen that has 7 protons and 3 neutrons.What are the atomic atom and…
A: 1A] Electrons=1 protons =1 neutrons = 0 2A] Atomic number = 1 mass number = 1 3A]…
Q: Beyond the usual carbon based life, and proposed life based on silicon, what other compound is…
A: Carbon based Life The life on earth is carbon based this is because carbon have unusual tendancy…
Q: Radioisotopes are useful in dating fossils and rocks because
A: Fossils They are remains of animals which are preserved in ice or in deep underground or inside…
Q: Why is the biological half-life of a radioisotope shorter thanits physical half-life?
A: Biological half-life refers to the time period when a radioisotope loses half of its pharmacological…
Q: What are some of the applications of Tc-99m? While harder to access, another radioactive isotope of…
A: As per the guidelines, we are allowed to do the first three subparts if more than three are given in…
Q: For how long has there been life on Earth? For what percentage of time has life existed on Earth?…
A: The age of the earth and proper research about the origin timelines of life had not yet researched…
Q: As the high-speed electrons knock out electrons and lose their energy when they hit the (+) target,…
A: Introduction Electromagnetic waves are a form of radiation that includes X-rays. X-ray imaging is a…
Q: Suppose a scientist finds a rock with an interesting fossil. Curious to know the age of the fossil,…
A: As per the data given, the Rb-Sr isochron equation is - ( 87Srt /86Srt ) = ( 87Sr0 / 86Sr0 ) + (…
Q: One problem in radiocarbon dating of biological samples, especially very old ones, is that they can…
A: Radioactive carbon dating is the process of determination of the approximate age of an ancient…
Q: Radiometric dating is a technique used to determine the age of rocks. Geologists have used this…
A: Radiometric dating is a technique used to determine the age of rocks. There is a constant rate of…
Q: how does acidic water affect the mass of a shell? Please provide claim, evindence, and reasoning…
A: Ocean water is very salty and its pH is very important for the growth and development of marine…
Q: What are stromatolites? From what we know of their formation today, why might we expect them to have…
A: Photosynthetic microbes live on the surface of the water. These microbes generate oxygen during the…
Q: Which of the following is an abundant element in humans? Group of answer choices A. sulfur B.…
A: A chemical element, also called an element, any substance that cannot be decomposed into simpler…
Q: a nucleus might emit radiation is because by doing so, it forms a more stable-lower energy nucleus.
A: Radioactivity is a special property of some elements or substances by which they continuously…
Q: Radiometric dating ... All of these answers are true O provides an accurate means of determining the…
A: Radiometric dating Technique used to date materials such as rocks by observing the abundance of…
Q: 19.Approximately how old is earth? Group of answer choices a.about 4.567 billion years b.about a…
A: Fossils are dead plants and animals that have been preserved in sedimentary rock or other crust…
A sample of a igneous rock contains small amounts of radioactive potassium and argon. Using the ratio of 40Ar to 40K, it is determined that only 25% of the original parent isotope remained. How old is this rock sample?
Please include thought process and a therefore statement. Thank you very much, have a good day!
Step by step
Solved in 2 steps
- Which of these factors influences the radioactive decay measured by radiometric dating? Temperature Half-life Pressure Chemical bonding statePolonium is a rare element with 33 radioisotopes. The most common one, 210Po, has 82 protons and 128 neutrons. When 210Po decays, it emits an alpha particle, which is a helium nucleus (2 protons and 2 neutrons). 210Po decay is tricky to detect because alpha particles do not carry very much energy compared to other forms of radiation. For example, they can be stopped by a single sheet of paper or a few inches of air. That is one reason that authorities failed to discover toxic amounts of 210Po in the body of former KGB agent Alexander Litvinenko until after he died suddenly and mysteriously in 2006. What element does an atom of 210Po become after it emits an alpha particle?Many radioactive isotopes are used in medicine for imaging and treatment purposes. The specific isotopes used depends on the particular organ or body system being studied (for example, Xe-133 is used to image lung function and blood flow.) Technetium-99m is a common radioactive isotope using for a variety of medical applications. It is produced from the decay of Molybdenum-99 and has a half-life of 6.01 hours. What are some of the applications of Tc-99m? While harder to access, another radioactive isotope of technetium, Tc-93, has a half-life of 2.73 hours. If it were easier to harvest, would this be a good substitute for Tc-99m? (remember to explain why for full credit) While Tc-99m has a half-life of 6.01 hours, its decay product has a half-life of 213,000 years. While the medical community considers it to be reasonably safe, within the limits of testing, does this make sense considering both chemical and biological principles? What are possible ways that you might deal with or…
- Define the terms belowi. Radioisotopeii. Decay seriesiii. Radioactive decay energy and its unitsiv. Decay constantv. Scintillation cocktailvi. Counts per minutevii. List the events that lead to the detection of radioactivity in a liquid scintillationcounter.Metric Prefixes Nano-, Micro-, Centi-, and Milli- Match each prefix with its value. 1 Micro 2 Nano Centi 4 Milli Match each of the options above to the items below. 1 x 10-3 No answer 1 1 x 10-2 2 3 4 1x 10-9 1х 10-6 mAlbert Einstein’s equation for the conservation of matter and energy (E = mc2) predicts that if the mass of uranium to be split in a nuclear fission reaction were to double, then: the amount of energy released would be decreased to one-fourth the amount of energy released would be decreased to one-half the amount of energy released would be increased four-fold the amount of energy released would be increased two-fold the amount of energy released would remain the same
- X+IS Woddy hodule sturtrig M X gennet.us/courses/59718/quizzes/1122920/take Histo. o Quizzes > TEST - Momentum and Collisions TEST - Momentum and Collisions Started: Mar 8 at 1:19pm Quiz Instructions You have 40 minutes to take this test. Please remember that it is a MOMENTUM and COLLISIONS test - so your answers should be a things we learned in our class that are about momentum and collisions! Question 1 Momentum is most directly dependent upon which two quantities? O weight and force O mass and velocity O velocity and acceleration mass and accelerationGiven the chromatogram below, which of the following is the possible identity of unknown sample Y? B. O Sample E O Sample F O Sample Z O Sample B ON33 of 48 A radioisotope is all the following except an isotope with different number of neutrons from others a chemical that either glows in the dark or releases heat an unstable isotope that eventually changes into a different element a chemical that gives off radioactivity
- Topic: Isotope of Manganese What are the history, applications in various fields like medicine, agriculture, industries and health, as well as the adverse effects. Pictures are highly appreciatedThe reason why a nucleus might emit radiation is because by doing so, it forms a more stable-lower energy nucleus.True falseThe picture below shows the position of Earth and two stars. Star 1 is 18 light years from Star 2 and 34 light years from Earth. If Star 2 explodes as a supernova, in how many years would the explosion be seen from Earth? (3 points) Group of answer choices 18 34 70 52
