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Carbon dating is a well-calibrated radiometric dating system used for items generally younger than 50,000 years old (14 C has a half-life of 5730 years). A recently unearthed Viking burial mound contained a ship, a sample of which was found to have a C activity of 14.3 disintegrations per minute per gram of the sample. A nearby forest provided a living sample of wood with a 14C activity of 16.8 disintegrations per minute per gram of the sample.
Gases diffuse faster compared to liquids because of the reason that the liquid molecules A. are held together by stronger inter-molecular forces.
To account for the high electronegativity difference between hydrogen and fluorine, we reassign the orbital sites in HF in order to create an energy ladder that gives us a logical sequence for assigning electrons
What volume of 0.240 M K2S solution is required to completely react with 195 mL of 0.155 M Co(NO3)2.
the overall reaction in the lead storage battery is below.pbs pbo2s 2 haq 2 hso4oline aq 2 pbso4s 2 h2olcalculate
What is the maximum number of electrons in an atom whose highest-energy electrons have the principal quantum number n=5
Ten kg of steam at 500 bar is expanded at constant pressure until its pressure increases to seven times its initial value of 0.01 m^3. (a) Determine the initial and final temperature of the steam. (b) Calculate the heat that must be supplied to ca..
Due to oxygen consumption by the above reaction, the dissolved oxygen concentration in the water is only 2 mg/L. What is the maximum amount of energy that an organism could obtain by oxidizing 1 µmol of the organic matter
considering the given equation koh ch3cooh ---gt kch3coo h2o determine the volume of 0.157m solution potassium
Why are monochromators (prism or grating monochromators) used in scanning instruments as opposed to absorption filters
The vapor pressure of CCl4 (MM = 153.81g/mol) at 65 degree celsius is 504mmHg. How many grams of C10H8 (MM= 128.2gmol) must be added to 25.00g of CC4 so that the vapor pressure of CCl4 is 483mmHg?
The resulting solution required 12.36 mL of 0.1211 M NaOH to back titrate the excess HCl. What was the percent CaCO3 in the unknown? Report your answer to two (2) decimal places
calculate the velocity of electrons emitted from molecules in which the binding energies are 10ev, 100ev, and 500ev
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