A certain drug has a half-life in the body of 3.5h. Suppose a patient takes one 250.mg pill at 6:00 PM and another identical pill 90min later. Calculate the amount of drug left in his body at 8:00 PM.

Q: The Hydrogen isotope, tritium, is radioactive and has a half-life of 12.5 years. What percentage of…

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Q: Scientists working in Lake Istokpoga calculating half-lives of pollutants called volatile organic…

A: The half life (t1/2) of zero order reaction is given by the formula  t1/2 = [R]o / 2K [R]o = Initial…

Q: Suppose that sodium pentobarbitol is used to anesthetize a dog. The dog is anesthetized when its…

A: Sodium pentobarbitol is an anesthetic drug. Here in this question all the datas and solution are…

Q: Two gases X and Y are found in the atmosphere in only trace amounts because they decompose quickly.…

A: Given, held life of X is 1.5 h and y is 135 min  Partial pressure of X is 75% greater than Y

Q: Two gases X and Y are found in the atmosphere in only trace amounts because they decompose quickly.…

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Q: At an archaeological site, several well- preserved items made from wood were found. The carbon-14…

A: The objective of this question is to determine the age of the wooden items found at an…

Q: The half-life of the radioactive isotope phosphorus-32 is 14.3 days. How many days does it take for…

A: The equation for 1st order decay is:

Q: Two gases X and Y are found in the atmosphere in only trace amounts because they decompose quickly.…

A: The half-life of a reaction is the time taken for the reactant to reduce to half its initial value…

Q: The half-life of the radioactive element plutonium-239 is 25,000 years. If 16 grams of plutonium-239…

A: Rate of a reaction determines the speed with which a reaction proceeds. First order reaction is a…

Q: Two gases X and Y are found in the atmosphere in only trace amounts because they decompose quickly.…

A: Half-life of X = 15 minHalf-life of Y = 1.00 h = 60 minThe partial pressure of X is 2 times greater…

Q: Scientists can determine the age of ancient objects by the method of radiocarbon dating. The…

A: Half life of 14C = t1/2 = 5730 yr

Q: The radioactive isotope copper-64 (64CU) is used in the form of copper(II) acetate to study Wilson's…

A: Answer: the half life of radioactive isotope c64u is used in the form of copper(II) acetate  is 12.7…

Q: the half-life of the antidepressant Prozac in an average man is 2 days. how long in days does it…

A: The half-life of the antidepressant Prozac in an average man is = 2 day The time required for the 95…

Q: half-life

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Q: Fluorine-18 is a radioactive isotope that decays by positron emission to form oxygen-18 with a…

A: The radioactive decay is considered as first order reaction. the rate law is given…

Q: Two gases X and Y are found in the atmosphere in only trace amounts because they decompose quickly.…

A: Given:Half-life of X = 105 minHalf-life of Y = 1.25 hrThe partial pressure of X is 5 times greater…

Q: Radioactive gold-198 is used in the diagnosis of liver problems. The half- life of this isotope is…

A: First using given value determine the rate constant, k value. t1/2=2.7…

Q: Chemistry 2. The following experimental data are obtained for the decomposition of nitrogen…

A: The integrated rate law for first order reaction is  lnNO2 =-kt+constant So, if the plot of lnNO2 vs…

Q: 3. One of the radioactive nuclides formed in nuclear power plants is hydrogen-3, called tritium,…

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Q: Scientists can determine the age of ancient objects by the method of radiocarbon dating. The…

A: a) Dinosaur fossils are too old to be reliably dated using carbon-14. Suppose we had a 67 million…

Q: ? Two gases X and Y are found in the atmosphere in only trace amounts because they decompose…

A:

Q: Radioactive gold-198 is used in the diagnosis of liver problems. The half-life of the isotope is 2.7…

A:

Q: Radioactive gold 198 is used in the diagnosis of liver problems. The half-life of the isotope is…

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Q: If we start with a 50.0-g sample, how much remains after three half-lives have passed?

A: Half-life of a reaction is the time in which half of the reaction completes. This means that the…

Q: Radioactive gold-198 is used in the diagnosis of liver problems. The half-life of this isotope is…

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Q: The half life for the radioactive decay of potassium-40 to argon-40 is 1.26 x 10° years. Suppose…

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Q: If the first-order half-life of tritium (°H) is 12.26 years, what amount of time is necessary for it…

A: The half-life is the time taken for the reaction to complete half of its original concentration

Q: Uranium-238 decays to form thorium-234 with a half-life of 4.5x109 years. What is the decay constant…

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Q: The isotope strontium-90 is one of the extremely hazardous species in the residues from nuclear…

A: First order reaction- the reaction whose rate is depends on only single reaction whose concentration…

Q: The half-life of the radioactive isotope phosphorus-32 is 14.3 days how many days required to…

A: We have given that  t1/2 = 14.3 days  And the radioactive phosphorus-32  undergo 75%  decay

Q: Two gases X and Y are found in the atmosphere in only trace amounts because they decompose quickly.…

A: Answer:Here:

Q: Phosphorus-32 is used in biochemical studies to follow the pathway taken by metabolites. Its…

A: Soln

Q: Fallout from nuclear weapons tests in the atmosphere is mainly 90Sr and 137Cs , which have 28.6- and…

A:

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.