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When 5.00 g of fructose, C6H12O6, (FW 180.16 g/mol) is burned in a calorimeter whose heat capacity is 29.7 kJ/oK, the temperature increases by 2.635oK. Calculate the heat of combustion of fructose in kJ per mole.
In the following reaction, how many moles of the non-limiting reactant are in excess if 4.4 mol Al are combined with 2.7 mol HCl
How much faster do ammonia (NH3) molecules effuse than carbon monoxide (CO) molecules? Enter the ratio of the rates of effusion.
How many grams of chromium would be electroplated by passing a constant current of 5.2 amperes through a solution containing chromium(III) sulfate for 45.0 minutes.
If the mass of the ore from which the gold was extracted is 166.0 g, what percentage of the ore is gold.
Calculate the ph change when 25 ml of 3.0 M HCl are added to 500 ml of a solution that is 0.10 M CH3COO
A 1.30 g sample of dry ice is added to a 745 mL flask containing nitrogen gas at a temperature of 25.0 degrees Celcius and a pressure of 715 mmHg.
Calculate the amount of work done, in joules, when 2.5 mole of H2O vaporizes at 1.0 atm and 25°C. Assume the volume of liquid H2O is negligible compared to that of vapor. [1 L·atm = 101.3 J]
The following data were recorded in the analysis of erythropoietin in a plasma sample, as mg/dL. Which of the results, if any, could be statistically rejected with 95% confidence?
what is the maximum pressure that will be attained in the tank before the plug will melt and release gas?
Explanation for the Chemical Structure of Hydrocortisone, Can you please explain the chemical structure of cortisol and hydrocortisone? What is the difference on the structure? How many functional groups hydrocortisone has and what are they?
The heat of formation of Al2O3(s) is -1669 kJ/mol. Calculate the heat evolved when .267 g of Al burns in oxygen.
Calculate the change in temperature for 1.30 g of CaCl2 dissolved in 25.0mL of H2O. Assume that the calorimeter absorbs no heat. (ie C cal=0)
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