Melting point of an aqueous solution
Determine the melting point of an aqueous solution made by adding 186 mg of saccharin (C7H5O3NS) to 1.00mL of water (density = 1.00g/mL, Kf = 1.86Celcius/m).
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For the reaction, Fe2O3(s) + 3 CO(g) ? 2 Fe(s) + 3 CO2(g) , the enthalpy change is - 6.60 kcal. On the basis of this information, what is the heat change if 4.60 grams of carbon monoxide react?
Morphine , C17 H19 NO3 , is often used to control severe post-operative pain. What is the pH of the solution made by dissolving 25.0 mg of morphine in 100 ml of water at 25oc?
If a 20.0 g sample of CaCO3 is put into a 10.0 L container and heated to 800oC, what percent of the CaCO3 will react to reach equilibrium?
How might the information contained within the stockholder eqity statement be used for management and investors decision-making? Provide specific examplesof situations in which the stockholder eqity information might be used.
Machine Tool Company purchased a $600,000 welding machine to use in production of large machine tools and robots. The welding machine was expected to have a life of 10 years and a salvage value at time of disposition of $60,000.
If equal masses of gold and platinum are transferred to equal volumes of water in separate graduated cylinders, which cylinder would have the greatest volume change?
The following transactions occurred during 2011. Assume that depreciation of 10% per year is charged on all machinery and 5% per year on buildings, on a straight-line basis, with no estimated salvage value.
C6H12O6 + O2 --> CO2 + H2O is the overall chemical equation for biological respiration. How many moles of CO2 are produced by the reaction of 3.0 moles of C6H12O6 (a little more than a pound of glucose)?
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