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Problem- The carbon - 14 decay rate of a sample obtained from a young tree is 0.262 disintegration per second per gram of the sample. Another wood sample gives a decay rate of 0.180 disgeneration per second per gram of the sample. What is the age of the object (halflife of carbon-14 id 5715 years).
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5.00 g of SO2 and 5.00 g of CO2 were placed in a 750.0 mL container at 50.0 °C. What is the partial pressure of CO2 in the container?
calculate the standard free energy change in kj between br2 and cl- to form br- and cl2 when all components of the
Draw a structural formula that you would predict in aspirin in each of the following biological environments. a. Esophagus pH 6.8
when mixture A at 273 K is heated to 473 K, mixture B results. How many different chemical changes occur? How many different physical changes occur?
The solubility of Pb(NO3)2 is 55 gramsper 100 g H2O at 20 degrees celcius. Which term would properly describe a soloution where 44 grams of Pb(NO3)2 is added to 100 grams of water at this temperature
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An ideal gas is expanded reversibly and isothermally from 10 bar to 1 bar at 298.15 k. what are the values of (w), (q), delta U, and delta H. If the ideal gas expands isothermally against a constant pressure of 1 bar, how much work is done on the ..
While building a character table struggling with remembering explain how to find the irreducible representation for Rz. Explain how to determine it for x, y and z but not for Rz, Rx or Ry
Determine the V of a voltaic cell (E°cell) if it is required to do 5.43 × 10¯3 Kilo Joule of work when a charge of 2.50 C is transmitted.
In the laboratory a student combines 26.4 mL of a 0.182 M potassium bromide solution with 17.2 mL of a .329 M potassium bromide solution. What is the molarity of KBr in the final solution
what is a detailed mechanism for the formation of dibenzalacetone? This reaction is beginning with acetone and benzaldehyde and is treated with NaOH and then forms dibenzalacetone.
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