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Ethyl alcohol is produced by the fermentation of glucose, C6H12O6.
Given that the enthalpy of formation is -277.7 kJ/mol for C2H5OH(l) and -393.5 kJ/mol for CO2(g), find the enthalpy of formation for C6H12O6.
The mass of a cube of iron is 292 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions.
At standard temperature, a gas has a volume of 371 mL. The temperature is then increased to 131C, and the pressure is held constant. What is the new volume?
Calculate the pH of each of the following buffered solutions. to 1.00 L of each of the four solutions. (a) 0.100 M propanoic acid (HC3H5O2, Ka= 1.3 10-5) (b) 0.100 M sodium propanoate (NaC3H5O2)
Calculate the fraction of atom sites that are vacant for silver at 695°C. Assume an energy for vacancy formation
In a combustion reaction 4 moles of C8H18 react with 8 moles of O2. If the actual yield of CO2 produced is 28.16 grams, what is the percent yield?
What is the average speed of the sprinter if A sprinter set a high school record in track and field, running 200. M in 22.0s .express your answer in kilometers per hour?
Calculate the resulting pH if 365 mL of 2.88 M HNO3 is mixed with 335 mL of 1.10 M Ca(OH)2 solution.
A solution containing Pt4+ is electrolyzed with a current of 5.80 A. How long will it take to plate out 79% of the platinum in 0.50 L of a 0.010 M solution of Pt4+.
How many moles of O2 are needed to burn 1.05 mol of C8H18
Estimate the pH at the equivalence point of an HOAc solution if 25.5 mL of this solution required 37.5 mL of 0.175 M NaOH to reach the equivalence point (Ka = 1.8 x 10-5).
B2H6 + 3O2= B2O3+3H2O ; delta H=-2035 KJ how much heat is released when a mixture of 7.35 g B2H6 and 2.60 g O2 is burned?
What is the pH of a buffer prepared by dissolving 0.238 g of NaNO2 in 2.50 L of 1.5 x 10-3 M HNO2, Ka (HNO2) = 6.0 x 10-4?
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