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Write a mathematical equations that show how you will calculate the deteced activity from the count rate due to background radiation and the sample of KCl. also, write an equation that shows how you will determine the "true" activity of your sample. Use the following terms:
Rback = count rate for background radiation
Rtot = total count rate detected from your sample and background
R = detected count rate from your sample less the background radiation
Rtrue = the corrected count rate for inefficiencies in the counting procedure, or the "true" count rate.
A solution of 0.95 g of a compound in 120 g of cyclohexane has a freezing point of 6.08 degree celsius. what are the molality of the solution and molar mass of the solute.
calculate the equilibrium constant for the reaction. b. what is the chemical significance of the value of the equilibrium constant?
Which formula represents a salt?
When ethane (C2H6) reacts with chlorine (Cl2), the main product is C2H5Cl, but other products containing CI, such as C2H4CI2, are also obtained in small quantities.the formation of these other products reduces the yield of C2H5CI.
According to Avogadro's law, how many liters of hydrogen are required to react with 1.9L of oxygen at STP.
Octane is a major component of the gasoline for cats and trucks. When octane burns it produces carbon dioxide,water and energy. 43 500 kJ of energy is needed to drive a car 350 km. calculate how many grams of octane are needed to provide this ..
1.0 atm pressure of oxygen is 0.041g/L. The solubility of oxygen in water at 3.0 atm and 25 C is _____ g/L.
the humidity in the room is high. how will this affect the reported molar concentration of the hydrochloric acid solution? Will it be too high, too low, or unaffected
The charges of the ions in an ionic compound affect the strength of the electrostatic attraction holding that compound together. Based on ion charges, rank these ionic compounds by their expected melting points.
To the solution in problem 1 (d) at 100 degrees celsius, 10g of water are added, and the solution is cooled to 0 degrees celsius... (problem 1d: the number of grams of water required to dissolve a mixture containing 15 g KNO3 and 3.5 g CuSO4 * 5 H..
phosphate combines with sodium hydrogen phosphate to yield sodium tripolyphosphate and water
A buffer is prepared by mixing 0.2 mole of HCOOH with 0.3 mole of NaHCOO in a volume of 200 ml. How many grams of NaOH must be added to achieve ph of 4
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