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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.
complete the balanced reaction if it will occur.state does not occur if the reaction will not take place.make sure that
Assume that the partition coefficient, K, for partitioning of compound A between diethyl ether and water is 3; that is, A preferentially partitions into ether.
A 0.50 sample of compound contains 0.40g of Carbon and .10g of Hydrogen. What is the empirical formula
2noclglt--gt2nog cl2ga pressure of 0.600 atm of nitrosyl chloride is sealed in a flask and allowed to reach
meteorological balloon contains 375 L of helium at 29°C and 0.928 atm. If the volume of the balloon can vary according to external conditions, what volume would it occupy at an altitude at which the temperature is -40°C and the pressure is 0.031 a..
Calculate the pH at the equivalence point for the titration of 0.20 M HCl with 0.20 M NH3 (Kb = 1.8x10-5)
calculate the number of excess reagent units remaining when 41 C2H4 molecules and 102 O2 molecules react?
the three species n2 co and cn- are isoelectronic. comment on the location of any formal charges in these moleculesion
Calculate the pH of a solution made by adding 51 g of sodium acetate, NaCH3COO, to 18 g of acetic acid, CH3COOH, and dissolving in water to make 700. mL of solution. Hint given in feedback.
if a sample of 2.63 L of neon is collected at 730 torr and 26 degrees C, what volume will the gas occupy at 1.10 atm and 10 degrees C?
suppose a similar experiment had been done using 1.0 m h3po4 solution as the acid. what would be the expected
6NaOH + 2Al -> 2Na3AlO3 + 3H2 What volume of hydrogen gas (measured at STP) would result from reacting 75.0g of sodium hydroxide with 50.0g of aluminum?
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