It is well known that any radiocarbon takes several decades to disintegrate. In an experiment, only 0.5 percent of thorium disappeared in 12 years. 1. What is the half-life of the thorium? 2. What percentage will disappear in 15 years?

Q: Write the IUPAC name of the following compounds.  Capitalize ONLY the first letter of the name.…

A:

Q: Calculate the selubility df CuSCN in OilH Nq SzQ; = 2.3x 167

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A: GIVEN:-

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Q: moles

A:

Q: In 4+2 cycloaddition, ENDO stereochemistry is preferred because:

A:

Q: 2. Calculate the normal freezing point of a 0.7439 mol aqueous solution of C12H22O11 that has a…

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Q: How many grams of AICI3 can be produced from 5 moles of Aluminium and 6 moles of Chlorine gas? Which…

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A: The pKa can be taken in the range of pH ± 1

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Q: In the reaction 2H2O2(aq) +> 2H2O(l) + O2(g), the initial concentration of H2O2 is 0.745 M and,…

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Q: For the mechanism, draw the curved arrows as needed. Include lone pairs and charges in your answer.…

A: Given compound is acyl chloride and it react with grignard reagent. In acyl chloride , there is…

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Q: What is the pH of a 0.2 M HCl aqueous solution? HCl(aq)+H2O(l)⇌H3O+(aq)+Cl−(aq)    Ka=2×10^6

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Q: он NH но ÕH "OH ÕH HO" cerebroside O monoglycosyl ceramide glycosphingolipid all are correct

A:

Q: Which of the following statements is true? For an ideal solution, _____. I.      DHmix = 0 but HE >…

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A:

Q: Use the following atomic masses (in g/mol): K = 39.1; Mn = 54.94; O = 16; H = 1; P = 30.97; C =…

A: Given acid-base reaction is  H2SO4  +  2 NaOH  -->  Na2SO4 + 2 H2O    At equivalents point Na…

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Q: (Q16) What is the pH of a solution that is 0.889 M in ethylammonium chloride (CH3CH2NH3CI)? The Kb…

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Q: If no reaction occurs leave all boxes blank and click on "Submit". Write a net ionic equation for…

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Q: What is the pH (to two decimal places) of a 2.0 M HF aqueous solution?…

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Q: Balance

A:

Q: 14. Which statement about hydrocarbons is true? (A) Complete combustion occurs when the oxygen…

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Q: How many Praseodymium atoms are present in 2.99 moles of Praseodymium ? Note: If your answer…

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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.