How old is the piece of wood
A piece of wood has carbon-14 activity found in an archeological dig that is 74% of the current carbon-14 activity. How old is the piece of wood when the t1/2 carbon-14 = 5.73ka
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Describe the vapor pressure of a solution which contains the 50.0% by mass sucrose (MW 342 g/mol) in water (MW 18.0 g/mol, density 1.00 g/mL) at a temperature where pure water has a vapor pressure of 26.0 torr.
Determine the numbers of grams of the zinc sulfide should precipitate the theoretically if 2 liters of a 4 M aqueous solution of zinc nitrate are reacted with an excess of an aqueous solution of sodium sulfide.
Determine the population ratio N(v=1)/N(v=0), where v=0 and 1 are the ground and excited vibration states for the HCl at room temperature of 298K? Assume a vibration transition wave number of 2991 cm-1 and Cl-35isotope.
An adult weighing 70kg contains about 170g of K. The beta decay of 40K that is a natural part of the body. The relative abundance of 40K is 0.0118% its half life is1.28x109 years, and its beta particles have an average kinetic energy o
Calculate the vapor pressure of a solution which contains the 50.0% by mass sucrose (MW 342 g/mol) in water (MW 18.0 g/mol, which is having the density 1.00 g/mL) at a temperature where the pure water has a vapor pressure of 26.0 torr.
Determine the cell voltage for this reaction assuming the (Fe+2, Fe +3, Cr +3 are 0.1M)? Determine the reduced and the oxidized? Write down the half reactions for each electrode.
When 2.5 g of a Zinc strip were placed in a AgNO3 solution, silver metal produced on the surface of the strip. After sometime had passed, the strip was removed from the dried, solution, and weighed.
A sample which is having the 2.00 mol of graphite reacts totally with a limited quantity of oxygen at 25 Degrees Celsius and 1.0 atm pressure, forming the 481 kJ of heat and a mixture of CO2 and CO. Determine the masses of CO and CO2 forme
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