Which example is an enodthermic process? O producing sugar by photosynthesis O formation of snow in clouds nuclear fission none of the above O all of the above

Q: dating works by measuring the   ratio of isotopes   amount of radioactivity absorbed…

A: Answer

Q: The half life for the decay of carbon-14 is 5.73 × 10’ years. Suppose the activity due to the…

A:

Q: How do the nuclear reactions that power the Sun compare to the nuclear reactions that occur in a…

A: A nuclear reaction is described in nuclear physics and nuclear chemistry as the reaction by which…

Q: An organism at the time of its death contained 3,000 grams of the radioactive isotope Carbon-14.…

A: The Carbon 14, or radiocarbon dating method is one of the best-known methods of dating human…

Q: What particle completes this reaction

A: Radioactive elements emit continuous radiation and undergo radioactive decay. There is harmful…

Q: Which of the following statements are negatives associated with using nuclear energy? I. Nuclear…

A:

Q: Assume that the rate of decay of a radioactive substance is proportional to the amount of the…

A: Nuclear reactions are a type of chemical processes that lead to the formation of some new nuclei…

Q: 18 Consider the following nuclear reaction e + v and determine the Q value or total energy released…

A: This question based on binding energy which is the amount of energy released during the formation of…

Q: 25. Fusion reactions can only occur when particles A. collides at very high speed B. collides at…

A:

Q: Strontium-90 is present in the fallout produced by nuclear weapons testing in the atmosphere. Sr-90…

A:

Q: In a dusty corner of a spooky abandoned lab, you find a vial labeled “70g of iron-55”.  You weigh…

A: Welcome to bartleby !  We have to calculate time required

Q: 12) Scientists are using Carbon-14 to date a fossil found in some ruins in a crater in southern…

A:

Q: (7) Carbon-14 dating is used in archeology to determine the age of items that were alive or were…

A: First, we need to know the half life of carbon-14, which is approximately 5,730 years. The…

Q: energy

A:

Q: Isotopes that are used to determine groundwater recharge seasonality are referred to by I) stable or…

A: Answer - The correct option is (i) Stable  Explanation - The stable isotopes of oxygen and hydrogen…

Q: Researchers have attempted to combine the nuclei of multiple atoms to generate large amounts of…

A: For the 1st question  Answer - Option showing Fusion  is correct

Q: Assume that the rate of decay of a radioactive substance is proportional to the amount of the…

A: (a) Half-life (t1/2) = 0.693 / k or, k = 0.693 / t1/2 where, k = rate constant

Q: 3. a) In the following example of nuclear fission, provide the symbol of the missing product. 'on +…

A: The fill in the blanks has to be filled.

Q: Beta O It is stable and does not undergo decay. QUESTION 15 Find the temperature (in K) below which…

A: [15.] ΔH = - 201.5 kJ/mol = - 201.5 × 103 J/mol ΔS = - 70.2 J/k.mol T = ?

Q: what should be the carbon-14 content (in percent) of a fossilized tree that is claimed to be 2500…

A:

Q: A certain drug has a half-life in the body of 3.0 h. Suppose a patient takes one 200. mg pill at…

A: The correct answer is given below

Q: Carbon Dating: Carbon-14 commonly used for dating historical artifacts, is a radioactive isotope…

A: Given: Amount of carbon-14 in the bone remaining, [A] = 47% of its original concentration = 0.47…

Q: a drug has instantaneous distribution and a half life of 3 hours. there are drug still in the body…

A: Given, the half life time of the drug (t1/2) = 3 hours time is taken to metabolism the drug (t) = 12…

Q: The half life for the decay of carbon- 14 is ×5.73103 years.   Suppose the activity due to the…

A: The radioactive disintegration is the example of first order kinetics. The integrated rate equation…

Q: The Murchison meteorite that was found in Australia in 1969 is important to scientists because it…

A: The Murchison shooting star is a shooting star that fell in Australia in 1969 close to Murchison,…

Q: Carbon 14 decays to carbon12. The half-life of the C14 isotope is 5730 years. 3000 years after an…

A:

Q: If a radioisotope is required to undergo a decay series in order to form a stable isotope at the…

A:

Q: Which of the following chemical elements has the highest tendency to loss electrons? Al. Li. Mg.…

A: The correct answer is given below

Q: The amount of carbon-14 present in animal bones after t years is given by - 0.00012t A bone contains…

A: Given: The amount of 14C present in the animal bone is calculated by the formula,…

Q: If you have 2.0 grams of a radioactive substance left after 5 half-lives, how much did you start…

A:

Q: The average energy released in the fission of a single uranium-235 nucleus is about         3 x…

A: power=EnergytimeP=1000MW=1000×106W is used for 1 yearenergy…

Q: You analyze a sample of a meteorite that landed on Earth and find that 15/16 of the uranium-238…

A: The question is based on the concept of chemical kinetics. we have been given a radioactive material…

Q: Compare and contrast nuclear and chemical reactions.

A: Comparison of Nuclear and Chemical reactions. Nuclear reaction : 1. forces responsible for nuclear…

Q: Nuclear energy is one of the solutions to meet the energy demand in the modern era and It is easy to…

A: Nuclear reactions are of two types: nuclear fusion and nuclear fission. In nuclear fission…

Q: Dinosaur fossils are often dated by using an element other than carbon, like potassium-40, that has…

A:

Q: A 70.-kg person exposed to ⁹⁰Sr absorbs 6.0X10⁵  β⁻ parti-cles, each with an energy of…

A: When a person is exposed to radiation of certain limit, it is not harmful. But, beyond a certain…

Q: Which conservation law is violated in the strong nuclear reaction p + n → p + \overline{p}p​ + n

A: In nuclear reaction,  atomic mass and atomic number are balanced.  In nuclear reaction mass is not…

Q: (A) if both sentences are true, (B) if both sentences are false, (C) if the first sentence is true…

A: 1. (B)  both sentences are false reason - A radioactive atom will attempt to reach stability by…

Q: Jania.20 Chapter 3 3.100 When 1.0 9 of gasoline burns, it releases gasoline 0.749/ML SI (3.4.3.6) A)…

A:

Q: A woman weighs 66.0 kg and is given 850. mg pills of a drug The concentration of drug inside the…

A: Half life period is time after which concentration of any substance become half of the initial…

Q: half-life

A:

Q: Fusion reaction pathways in the Sun begin with the two steps   Substitute in the correct symbols in…

A: For first fusion reaction, two moles of Hydrogen atom fused to each other and forming deuterium (…

Q: A certain drug has a half-life in the body of 2.0 h. Suppose a patient takes one 50.0 mg pill at…

A: A drug can be defined as medication which is used to cure and treat diseases.

Q: avier is at NASA analyzing Moon rocks. In one of the rocks from the lunar maria, he discovered 79 %…

A:

Q: What is half-life? y decaying to the half of the number. If we start with 400 atoms of a radioactive…

A: The element in which nuclei decay overtime period and give radiations is known as a radioactive…

Q: The ratio of Carbon-14 with Carbon-12 is given by the formula R=- 10-2 /0223_where t is the time in…

A: Given: The ratio of C-14 with C-12 is given by the formula, => R = 11012e-t8223 Where t = time…

Q: An unknown sample contains radioactive element U-235, If the original amount present is 3500 atoms,…

A:

Q: Radioactive decay is spontaneous. O True O False

A: Whether the given statement is true or false has to be given.

Q: Aluminum decayed into silicon. It must have emitted a(n) __________ .

A: Aluminium has 22 isotopes and only one of them is stable. Since the isotope of Aluminium has not…