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Sucrose(table sugar) has the formula C12H22011(MOLAR MASS=342.20 G/MOL) and a food value of 6.49 kJ/g. Determine the calorimeter constant of the calorimeter in which the combustion of 0.600 g of sucrose raises the temp by 1.96 C
can be done by the system if the octane is completely converted to carbon dioxide and water vapor? What will the enthalpy change be for the process? Calculate the root-mean-square speed of the carbon dioxide molecules in the question above.
Calculate the theoretical pH of 0.250 M weak acid, HA. Calculate the theoretical pH of a 2.5 x 10-3 M weak acid, HA, that has a Ka value of 1.2 x 10-4. What happens to % ionization of the weak acid as you dilute the acid?
Draw structures of the following 5-carbon molecules. which are isomers of eachother and explain the type of isomerism involved?
A flask of nitrogen is collected over water at a total pressure 765.0 mmHg. If the partial pressure of the water vapor is 25.0 mmHg, what is the pressure exerted by the nitrogen?
Methyl orange is made by diazotizing the sodium salt of sulfanilic acid (p-aminobenzenesulfonic acid) followed by coupling with N,N-dimethyl aniline. Write equations for these reactions,giving the structure of methyl orange.
A solution is prepared by dissolving 5.32 grams of potassium nitrite (a food preservative, as Clark Griswold would explain) into about100 ml of DI water in a volumetric flask. Enough water is then added to give a total volume of 250.0 ml. What are..
The oxidation of HSO3(-) by O2 in aqueous solution is a reaction of importance to the processes of acid rain formation and flue gas desulfurization.
How much heat is produced in burning 5 mol of CH^4 under standard conditions if reactants and products are brought to 298 K and H20(l) is formed
What is the pressure of the gas in this mercury manometer if h = 73 mm and atmospheric pressure
Calculate the pH of a 1.39x10^-2 M solution of the decongestant ephedrine hydrochloride if the pKb of ephedrine (its conjugate base) is 3.86
The densities of Zn, Cr and Fe are 7.89, 7.20, 7.86 g/cm3 respectively. When a 96.7 gram sample of an unkown metal is placed in a graduated cylinder containing 20.0 mL water, the water level rises to 32.3 mL. What is this metal?
If 1.50 g of (NH4)2SO4 is dissolved in enough water to form 200. mL of solution, what is the molarity of the solution.
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