Anthropologists can estimate the age of a bone or other sample of organic matter by its carbon-14 content. The carbon-14 in a living organism is constant until the organism dies, after which carbon-14 decays with first-order kinetics and a half-life of 5730 years. Suppose a bone from an ancient human contains 18.5 % of the C-14 found in living organisms.

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Q: 1. The unit cell of titanium(IV) oxide that adopts the rutile structure is shown. How many ions of…

A: The objective of the question is to determine how many ions of  and .

Q: Is 5-hydroxymethylcytosine aromatic? Draw at least one resonance structure to prove your reasoning.

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Q: Under certain conditions the rate of this reaction is zero order in ammonia with a rate constant of…

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Q: Draw the deoxyribonucleotide TGA.

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Q: Which of the molecules are linear? NO₂ BeCl₂ SF₂ XeF2

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Q: Rubidium (87Rb) decays to Strontium (87Sr) with a half-life value of 48.8 billion years. 87Rb is the…

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Q: 11.88. Calculate (V) for ₁5 of the H atom and compare it to 1s the total energy.

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Q: Which of the following structures exhibits an sp³-hybridized nitrogen atom?

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Q: With the help of a neat flow chart, describe the manufacture of ethyl alcohol by fermentation…

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Q: A chemistry graduate student is studying the rate of this reaction: 2H3PO4 (aq) → P₂O5 (aq) + 3H₂O…

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Q: what is the energy of a hydrogen atom electron in the N =4 level

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Q: Suppose a 500. mL flask is filled with 1.7 mol of N₂ and 0.10 mol of NH3. This reaction becomes…

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Q: Complete the following table. Round each of your answers to 3 significant digits. food a cup of…

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Q: You need to prepare an acetate buffer of pH 5.42 from a 0.647 M acetic acid solution and a 2.43 M…

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Q: How many milliliters of 1.08 M HClO4 should be added to 1.80 g of imidazole to give a pH of 6.993?

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Q: 15. Provide a retrosynthesis for the target molecules shown.

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Q: Draw the condensed structure of 4-hydroxy-2-methylpentanal.

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Q: Part 5. Dalton's Law of Partial Pressures A sample of Argon gas is placed in a 5.0L container at…

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Q: Nitrogen and hydrogen combine at a high temperature, in the presence of a catalyst, to produce…

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Q: Determine the pH during the titration of 114.3 ml of 0.6 M HBr with 114.3 ml of 0.6 M KOH.

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Q: Name two uses of lipids as hormones and two uses as vitamins in human body

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Q: Draw the structure(s) of the major organic product(s) of the following reaction.

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Q: Identify the unknown

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Q: po Combining 0.212 mol Fe₂O3 with excess carbon produced 15.1 g Fe. Fe₂O3 + 3C 2 Fe + 3 CO What is…

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Q: Name the following organic compounds: CH3 CH3 CH₂ CH₂- - CH₂ CH₂ - CH3 CH3- C- | CH3 compound CH3 —…

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Q: Chlorine monoxide and dichlorine dioxide are involved in the catalytic destruction of stratospheric…

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Photochemistry

Photochemistry is the part of chemistry that studies the various mechanisms of reactions that are triggered by the presence of light energy. It also helps to study the changes involved in a molecule that can undergo the absorption of radiation.