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Question- An archaeologist discovers a fossil with a carbon-14 activity of 7.5 dpm per gram of carbon. If carbon-14 has an activity of 15.3 dpm, what is the estimated age of the fossil? (t1/2 = 5730 years)
Express your knowledge to solve the above question
If 8.0 moles of the gas A is palced in a 60.0 L tank with 1.0 moles of B at 0 degress celsius and 1 atm, they react according to this equation: 2A(g) + B(g) --> 3C(g) +D(g) How many moles are present in the tank when the reaction is complete
what would the balanaced equation be for the production of Triiodide considering the reactants
A cylinder is labeled \"PENTANE.\" When the gas inside the cylinder is monochlorinated, five isomers of formula C5H11Cl result. Was the gas pure n-pentane, pure isopentane, pure neopentane, or a mixture of two or all three of these
Nitric oxide reacts with chlorine to form nitrosyl chloride, NOCl. Use the following data to determine the rate equation for the reaction.
potassium hydrogen phthalate, a monoprotic acid with a molecular weight of 132 g/mol
On a plot it shows the absorbance of a Cu(NO3)3 solution increased as it concentration increased. Do you think this relationship between abosrbance and concentration applies to other colored solutions besided Cu(NO3)2
How many moles of hydrogen are consumed when 40.0 L of hydrogen chloride gas are produced in the following equation? H2 + Cl2 ---> 2HCl
what is the hvap of a liquid that has a vapor pressure of 616 torr at 84.1 c and a boiling point of 95.5 c at 1 atm?
At a local convenience store, you purchase a cup of coffee, but ,at 98.40C, it is too hot to drink you add 23.0 g of ice that is -2.20 C to 248 ml of the coffee. What is the final temperature of the coffee
The standard free energy of activation of a reaction X is 89.4 kJ mol-1 at 298 K. Reaction Y is one million times faster than reaction X at the same temperature.
What are the concentrations of all species and the pH of a buffer solution that is 0.30M NH3 and 0.3 0M NH4Br? For NH3 Kb = 1.8 X 10-5.
A 2.63 L flask is filled with carbon monoxide at 27°c until the pressure is 6.72 ATM. Compute the total pressure after 2.89moles of carbon dioxide has been added to the flask.
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