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A total of 2.00 of a compound is allowed to react with water in a foam coffee cup and the reaction produces 121 of solution. The reaction caused the temperature of the solution to rise from 21.0 to 24.7 . What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water.
How can Infrared Spectrometry and/or NMR spectroscopy be useful in helping to identify structural features of an adduct
a cylinder with a moveable piston contains 0.76 of gas and has a volume of 330 .what will its volume be if an
Determine how much heat (in kJ) is needed to warm 12.0g of ice, that is initially at -10.0 ° C, to steam at 114.0 ° C? The heat capacity of ice is 2.09 J/g⋅ ° C and that of steam is 2.01 J/g⋅ ° C.
Calculate the molality and molarity of an NH3 solution made up of 37.0 g of NH3 in 70.0 g of water. The density of the solution is 0.982 g/mL.
The internal energy change, E, for the conversion of 1 mol of Compound A to Compound B is +0.2 kJ. Both A and B are solids with densities of are 2.5 and 3.0 g/cm3, respectively. Calculate the difference between enthalpy and internal energy when the..
State the advantage and disadvantage of a furnace compared with a flame in atomic absorption spectroscopy
What is the equilibrium constant, K, of the following reaction given the following equilibrium conditions
Calculate the pH of an HCl solution if 16.5 mL of this HCl solution is titrated with a 0.454 M NaOH and it took 5.65 mL of the NaOH to reach the equivalnce point.
Hydrogen has two naturally occurring isotopes, 1H and 2H. Chlorine also has two naturally occurring isotopes, 35Cl and 37Cl. Thus, hydrogen chloride gas consists of four distinct types of molecules
question lindane is a toxic insecticide that causes dizziness and diarrhea in humans. find the molecular formula for
Copper has two naturally occurring isotopes. Cu-63 has a mass of 62.939 amu and relative abundance of 69.17%. Use the atomic weight of copper to determine the mass of the other copper isotope. Express your answer using four significant figures
a radioactive isotope of phosphorous has a half-life of 14.3days. what fraction of the initial sample of the
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