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A cylinder contains 250 g of Helium at 200 K. The external pressure is constant at 1 atm. The temperature of the surroundings is lowered by 100 K. Calculate the heat lost or gained by the system in response to this change in the external temperature.
Calculate the empirical and molecular formulae of A and B. Deduce the structural formulae of A and B. State the type isoerism exhibited by A and B.
A total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 180g of solution. The reaction caused the temperature of the solution to rise from 21.0 to 24.7degrees Celsius
What is the mole fraction of HO2CCH2CHOHCO2H in this solution suppose you dissolve 2.56 grams of malic acid HO2CCH2CHOHCO2H in 50.0 grams of H 2 O.?
The temperature of a 150 gram drinking hlass decreased from 25 to 14 * C as 200 grams of water were added
1. when performing a friedel-crafts alkylation reaction not only does one have the problemsnbspof multiple alkylation
An equilibrium mixture in a 2.00 L vessel is found to contain 0.0406 mol CH3OH, 0.170 mol CO, and 0.302 mol H2 at 500 K. Calculate Kc at this temperature.
A sample of oxygen , at 24 c occupy a vol of 4.14*10(2) milliliters(ml)at 1.53 atm pressure. What pressure must be applied to compress. the gas to a volume of 1.377*10(2) ml , with no temperature change
If you were extracting 4-chloroaniline and naphthalene (a mixture in ether), what reagents could you use to obtain a separation via extraction technique
What is the concentration in moles per liter of SbCl5 in the container before any decomposition occurs. What is the preassure in atmospheres of SbCl5 in the container before any decomposition occurs. PV=nRT
if you prepare a 1.00 nh4clo4 solution of beginning with water at 21.5 what is the final temperature of the solution in
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 82% of the Mg2 be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9*10-12.]
What are the equilibrium concentrations of each reactant and product? (All three substances are gases at 250 °C)
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