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What happens to the temperature of a liquid as evaporation occurs? A. The temperature of the liquid increases. B. The temperature of the liquid remains the same. C. The temperature of the liquid decreases. D. Liquids cannot evaporate
15 g of steam at 373 K is added to 250g of H2O (l) at 298 K at constant pressure of 1 bar. Is the final state of the system steam or liquid water? Calculate ?S for the process.
The pentapeptide leucylglycylthreonyltyrosylalanine is first incubated with FDNB. When the resulting compound is heated to 110 deg C for 24 hrs in the presence of 6M HCl, the solution will contain
A fishing boat accidentally spills 15.0 barrels of diesel oil into the ocean. Each barrel contains 42 gallons. If the oil film on the ocean is 2.5 x 10^2 nm thick, how many square meters will the oil slick cover? Assume that the oil slick forms a ..
Calculate the equilibrium value of Pb+2(aq) in 1.00 L of saturated PbCl2 solution to which 0.250 moles of NaCl(s) has been added. Assume that no volume change occurs.
The nitrate concentration in an industrial effluent is determined using a nitrate ion selective electrode. Standards and samples are diluted 20-fold with 0.100 K2SO4 to maintain consatnt ionic strength.
Under a given set of conditions, benzene C6H6 (b.p. 80°C) has a retention time of 60 seconds using a GC column. Under these same conditions, would you expect the retention time of toluene C7H8
Assume that only a single stream exits the fuel cell. What is the flow rate of each of the species leaving the fuel cell? Not that the flow rates given to correspond a fuel cell rate at approximately 50kW using 2004 technology.
health risk does each of the following classification represent Corrosive Carcinogen Teratogen Mutagen
The pickering series for the He+ ion corresponding to a series of transitions, in which electrons fall into the level with n=4. Find The longest wavelength transition of the pickering series in Angstroms
Draw the para isomer produced when toluene reacts with \rm Br_2 in the presence of an iron(III) bromide catalyst
Polyunsaturated fatty acids (PUFAs) have several carbon-carbon double bonds as present in beta-carotene
Is the melting of wax a physical or chemical change? from the mass measurement only,( the mass of the candle at 0 minute is 10.1g, after 30 minutes is 7.4g) how could a chemical also be proved to have occured in the burning of candle.
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