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a. Steam at 35 bar and 600 K enters a throttling valve that decrease the steam pressure to 7bar. Presuming there is no heat loss from the valve, Define what is the exit temperature of the steam and its change in entropy?
b. If air assumed to be an ideal gas with Cp : 29.3 J/molK entered the valve at 35 bar as well as 600 K and left at 7 bar, define what would be its exit temperature as well as entropy change?
if 0.00484 mol N2O effuses through an orifice in a certain period of time, how much NO2 would effuse in the same time under the same conditions ?
consider a reaction of 50.0 ml of 1.12 mhc2h3o2 with 50.0 ml of 1.27 mnh3. calculate the number of mole of hc2h302 and
Using the technique of the previous problem ?E was found to be -2,000.00 kJ/mol of an unknown liquid hydrocarbon at 298 K. In another experiment it was determined that for each mole of hydrocarbon, 4 moles of oxygen gas are consumed and 9 moles of..
An underground reservoir contains natural gas at a pressure of 425 kPa and a temperature of 15 °C. If the volume of the reservoir is 1.3 x 104 kL
The decomposition of N2O5 is a first-order reaction: N2O5 ? 2NO2 + ½ O2. At 25 °C, it takes 5.2 h for the concentration to drop from 0.120 M to 0.060 M. Calculate the rate constant for the decomposition of N2O5.
Determine how much PV work is done if 80.0 g of C 2 H 4 and 125 grams of hydro chloric acid are permissible to react at atmospheric pressure and the volume change = -63.9 L? express your answer in kilojoules
Calculate the molarity of 52.56 grams of Al2(SO4)3 in 1.80 L of solution.
Draw a Lewis structure for each of the following molecules and determine its molecular geometry. What kind of intermolecular forces are present in each substance?
Treatment of ammonia with phenol in the presence of hypochlorite yields indophenol, a blue product absorbing light at 625 nm, which can be used for the spectrophotometric determination of ammonia.
a 0.421-g sample of asprin prepared in ther laboratory isdissolved in 95 ethanol diluted with water and titrated to
Convince yourself that function exp(-4x) is an eigenfunction of operator d/dx. Compute the corresponding eigenvalue.
Some water was added to the initial reaction mixture of 5mL water, 5.55g sodium bromide and 5 mL butanol in the procedure that was perfromed to obtain 1-bromobutane from 1-butanol.
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