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At a local conveience stor, you purchase a cup of coffee, but at 98 degree celsius, it is too hot to drink. you add 23.0 g of ice that is -2.2 degree celsius to 248 ml of the coffee. what is the final temperature( in degree celsius) of the coffee? ( assume the heat capacity and density of the coffee are the same as water and the coffee cup is well insulated)change of heat of fuss=6.01 KJ/mol, change of heat of vap=40.67 KJ/mol, C water=37.1/mol. 0c, speciffic heat capacity of water(l)=75.3J/mol.0c and specific heat capacity of water(g)=33.6J/mol.oc
Consider the design of a sine-wave generator. List the operational parameters that should be considered in this design project
An aqueous solution of hydroiodic acid is standardized by titration with a 0.174 M solution of sodium hydroxide. If 30.5 mL of base are required to neutralize 29.2 mL of the acid, what is the molarity of the hydroiodic acid solution?
Determine How many moles each of Na+ and Cl- are in 0.800 L A physiological saline solution contains 172mEq/ L each of Na+ and Cl-of the saline solution?
Some enzymes require a nonprotein prosthetic group in order to function. The nonprotein part of these enzymes are called
What were two significant differences between the spectra of curcumin and tetrahydrocurcumin
A gas expands and does P-V work on the surroundings equal to 327 J. At the same time, it absorbs 121 J of heat from the surroundings. Calculate the change in energy of the gas.
Which element requires the least amount of energy to remove the most loosely held electron from a gaseous atom in the ground state?
A gaseous hydrocarbon fuel is burned in 26.84% excess oxygen and the exhaust gas analyzed. On a dry basis, the ratio of carbon dioxide to carbon monoxide to oxygen in the exhaust gas
Calculate the pressures in the flask in parts a and b (in torr) if the atmospheric pressure were instead 675 torr.
Calculate how many mL of 0.100 M NaOH are needed to neutralize completely 49.0 mL of 0.0800 M H2SO4 (forming Na2SO4 and water).
Calculate work (in kJ) when 422 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 445 K:
The major isotopes of tungsten are 182W (26.32%), 183W (14.31%), 184W (30.67%), and 186W (28.62%). What is the atomic weight of W?
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