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At 20 degree C, the vapor pressure of C2H5OH (ethyl alcohol) is 43.9 torr. The vapor pressure of water at this temperature is 17.5 torr. These liquids behaved ideally. What would be the vapor pressure of a solution prepared by mixing 100 g of ethyl alcohol with 100 g of water
Calculate the standard enthalpy of formation of gaseous carbon dioxide (CO2) using the following thermochemical information: 2 C(s) + H2(g) C2H2(g) H = +226.8 kJ 2 C2H2(g) + 5 O2(g) 4 CO2(g) + 2 H2O(l) H = -2599.3 kJ 2 H2O(l) 2 H2(g) + O2(g) H = +..
the equilibrium constant kc for the reactionpcl3g cl2g pcl5gnbspis 49 at 230degc. if 0.70 mol of pcl3 is added to 0.70
969 ml of gas was collected at 64 degrees celcius and a pressure of 723 mm Hg. Find the volume at STP.
the naturally occurring compound urea conh22 was first synthesized by friedrich wohler in germany in 1828 by heating
A 100.0 mL sample of 0.300 M NaOH is mixed with a 100.0 mL sample of 0.300 M HNO3 in a coffee cup calorimeter. Both solutions were initially at 35.00°C and the temperature of the resulting solution was recorded as 37.00°C
Methanol burns in oxygen to form carbon dioxide and water. Calculate Delta H rxn at 25 . = kj ?? 2) calculate Delta S rxn at 25 degree c = j/k?? 3) delta G at 25 degree C = ? kj?? 4) spontaneous
newman projection along c3-c4 bond to show thw most stable and least stable confirmations of 3-ethyl-2,4,4,-trimethylheptane?
an area of 1.15 m^2 and given that the acceleration due to gravity is 9.8 m/s^2, what is the mass of this column?
An electrochemical cell is constructed with a zinc metal anode in contact with a 0.052 M solution of zinc nitrate and a silver cathode in contact with a 0.0042 M solution of silver(I) nitrate. What is the value of Q to use in the Nernst equation f..
Explain using resonance and inductive effects why trifluoroacetic acid (Pka = -0.25) is more acidic than ethanol (pKa = 16?
An enzyme-catalyzed reaction produces a product that has a maximum absorbance at 412 nm. The extinction coefficient is 4000 M^-1 cm^-1. A 10-to-1 dilution of the enzyme is made and 20 microliter of the dilution are put into a cuvette with 80 micro..
what is the value of the ionization constant of the weak acid HX at 298 K? You may ignore the contribution of the self-ionization of water.
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