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Ethanol (C2H5OH) melts at -114 °C. The enthalpy of fusion is 5.02 kJ/mol. The specific heats of solid and liquid ethanol are 0.97 J/g-K and 2.3 J/g-K, respectively. How much heat (kJ) is needed to convert 25.0 g of ethanol at -155 °C to vapor phase at 78 °C?
When ethanol burns C2H5OH + 3O2 ==> 2CO2 + 3H2O , how many moles of water are produced as 48.380 moles of carbon dioxide are produced.
Determine the limiting reactant -reaction mixture initially contains no products
Determine the new equilibrium concentration of hydrogen, if the hydrogen concentration is raised by 0.299 M?
The double-replacement reaction between silver-nitrate and sodium bromide produces silver bromide, a component of photographic film.
Designing and preparing aqueous buffer solution with the pH indicated - Give complete details of the design and preparation of an aqueous buffer solution (volume 100ml) with the pH indicated.
Compute the mass of air in an air-filled tire and the also determine the mass of He in a helium-filled tire
What is the chemical make-up of natural cleaners? How do these products compare to traditional cleaners? Are the active ingredients the same or different?
how many liters of O2 can be made from 342 g H2O2 if the density of O2 is 1.428 g/L?
Calculate the molar mass of a gas that has a density of 0.232 g/L at 156 oC and 222 torr. Use R = 0.0821 L-atm/mol-K for the value of the gas constant.
407 mL of H2 gas is collected over water at 785.3mm Hg and 23.5 degrees C. What would be the volume of this dry gas at standard conditions?
Compute the band gap for this semiconductor material after Consideing an intrinsic semiconductor with a conductivity σ that triples between the temperature 27 degree Celsius and 57 degree celsius.
The Ksp for PbBr2 = 8.9 x 10^-6. Calculate the molar solubility of this compound on a .20M Pb(NO3)2.
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