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If Ice melts at 273.15K with delta H fusion equaling 6.01kJ/ mol. An ice cube whose mass is 13.8 kg is dropped in a swimming pool whose temperature is held at 22.5 degrees Celsius.
What is the entropy change (delta S) for melting the ice?What is entropy change (delta S) for the pool?What is overall delta S?"
Questions on H-NMR spectrum of isopentyl acetate - What would the effect on yield be of allowing the crushed Dry Ice to be exposed to the atmosphere for long periods of time before being used?
Important information about Ethers and Alcohols, Ethers and Alcohols can be isomeric. Write the structures, and give the names for all possible isomers
HFC's (hydrofluorocarbons) are replacing CFC's (chlorofluorocarbons) because the C-H and C-F bonds are stronger than C-Cl bonds. If the bond enthalpy of a C-F bond is 482 kJ/mol.
calculate the percent yield of C2H5Cl if the reaction produces 188g of C2H5Cl
Calculate mass, mole fraction and avg. molecular weight of air, Calculate the constituent (a) mass, (b) mole fraction (c)average molecular weight of air at 25 degree centigrade, 1 atm, and molar density of all listed gases
A 29.0-g sample of water at 260. K is mixed with 48.0 g water at 340. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
What is the difference between an amino acid and a protein? How does this difference in structure affect biological function?
How many mL of 0.25 m NaOH solution are required and What is a standard soluyion in an acid-base titration
A powder contains FeSO4·7H2O (molar mass = 278.01 g/mol) among other components. A 3.585-g sample of the powder was dissolved in HNO3 and heated to convert all iron to Fe3
A gaseous mixture of rm O_2 and rm N_2 contains 36.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 485 mmHg?
Calculate the molar solubility of AgBr in a 1.00 M aqueous solution of ammonia. Then calculate the solubility of AgBr in pure water, and compare the two solubilities. (Ksp for silver bromide is 7.7x10 -13 and Kf for Ag(NH3)2+ is 1.6x10^7)
What is the number of moles of O2 needed to burn 260.0g of C2H2 in the reaction: 2C2H2 + 5O2 yields 4CO2 + 2H2O?
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