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Question- An ancient skull has a carbon-14 decay rate of 0.80 disintegrations per minute per gram of carbon (0.80dis/minxgC ).
Question- How old is the skull? (Assume that living organisms have a carbon-14 decay rate of 15.3 dis/min?gC and that carbon-14 has a half-life of 5730 yr.)
Anyone can tell me how to solve it step by step so that I will be able to understand what is going on?
A mixture of table salt and ice is used to chill the contents of hand-operated ice-cream makers. What is the melting point of mixture of 2.00 lb of NaCl and 12.00 lbs of ice if exactly half of the ice melts?
why is the dissolving of ammonium chloride endotherimic? would you get similar results for dissolving all salts
First lab experiment - zinc and copper aqueous solutions were tested in a microscale cell well where the voltage reading was 1.04V. Solutions were each at about 5mL.
Write the balanced reaction and determine the mass of KNO3 that should be mixed with 0.4 g of sugar to produce optimally balanced rocket candy.
if i initially have a gas at a pressure of 12 atm a volume of 23 liters and a temperature of 200 k and then i raise the
What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water.
a 100.0-g sample of water at 27.0 oc is poured into a 75.0-g sample of water at 89.0 oc. what will be the final
If 153 mL of wet H2 is collected over water at 24°C and a barometric pressure of 725 torr, how many grams of Zn have been consumed
A cube of metal which looks like gold (Au, 19.32 g/cm3) is suspected by a modern Archimedes of being either iron (Fe, 7.90 g/cm3) coated with gold or aluminum
an automobile tire has a pressure of 325 kpa when the temperature is 10 degrees celcuis. if the temperature of the tire
high spin whereas octahedral complexes can be either high or low spin, depending on the metal and/or ligand. What is the most likely explanation of this experimental result?
Describe the reaction as a balanced chemical equation that occurs when methane which is a natural gas, CH4 is burned in the presence of excess oxygen, O2. If 100g of Butane are reacted with unlimited amounts of oxygen
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