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Anthropologists can approximate 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 as well as a half-life of 5730 years. Presume a bone from an ancient human contains 17.0% of the C-14 found in living organisms.
lead is a toxic metal that affects the central nervous system. a pb-contaminated water sample contains 0.0013 pb by
How much heat is required to raise the temperature of 5.5 x 10^2 g of aluminum by 10°C?
What is the difference in reaction rate between a single step bi molecular reaction dye and NaCIO
Metallic magnesium reacts with steam to produce magnesium hydroxide and hydrogen gas. a. If 16.2 g Mg are heated with 12.0 g H2O, what is the limiting reactant?
newman projection along c3-c4 bond to show thw most stable and least stable confirmations of 3-ethyl-2,4,4,-trimethylheptane?
It is desired to inflate a baggie with a volume of 959 milliliters by filling it with hydrogen gas at a pressure of 0.544 atm and a temperature of 284 K. How many grams of H2 gas are needed?
The Daily Dose of Ampicillin for the treatment of an ear infection is 115mg/kg of body weight. What is the daily for a 34 lb child
A stock solution is prepared by adding 22 mL of 1 M Na3PO4 to enough water to make 73 mL. What is the PO43- concentration of 30 mL of the stock solution?
describe in detail the functional groups and their purpose in relation to ph stability spectrum of antibacterial
The distribution coefficient, K= conc. in ligroin/conc. in water, between ligroin and water for solute A is 7.5. what weight of A would be removed from a solution of 10g of A in 100 mL of water.
A piece of metal ore weighs 8.25 g. When a student places it into a container of water, the liquid level rises from 21.25 mL to 26.47 mL. What is the density of the ore?
consider a region of the atmosphere of volume 25l which at 20c contains about 1.0 mol of molecules. take the average
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