The amount of sodium chloride in the original mixture can be determined indirectly by subtracting the masses of ammonium chloride and sand from the initial mass of the powdered mixture. Calculate the percent difference between the results from the two methods using the following equation % difference = |(measured mass) − (mass by subtraction)| / (mass by subtraction) × 100%
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When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device
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4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.
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If a sample of radioactive isotopes takes 600 minutes to decay from 400 grams to 50 grams, what is the half-life of the isotope?
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The amount of sodium chloride in the original mixture can be determined indirectly by subtracting th...
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