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If 55.0 ml of ethanol (density=0.789 g/ml) initially at 8.0 C is mixed with 55.0 ml of water (density= 1.0 g/ml)ninitially at 28.6 C in an insulated beaker and assuming no heat is lost, what is the final temperature of the mixture?
A different nonscientist is going to make a new semiconductor III-V solid. But for reasons to discussed later, the scientist is going to use tow different elements for the III-atom part,
A gas occupies 672 mL at 785 mmHg. What volume would it occupy at 453 mmHg at constant temp??
Calculate the free energy change for translocating a proton out of the mitochondrial matrix, where pH(matrix) = 7.6 pH(cytosol) = 7.2
Hsolution for neutralization of HCl(aq) and NaOH(aq): Volume of HCl: 0.050 L Volume of NaOH: 0.050 L Volume total: 0.10 L Molarity of HCl: 1.99 M Molarity of NaOH: 1.99 M ?T for reaction B: 12°C Calculate the value (calories) for the heat of react..
a 340 g aluminum cup holds and is in thermal equilibrium with 750 g of water at 83degc. the combination of cup and
What effect will increasing the temperature have on the system? Fe3O4(s) + CO(g) ?? 3 FeO(s) + CO2(g) DH°= +35.9 kJ A) No effect will be observed. B) The reaction will shift to the right in the direction of products.
Why is ethylene glycol used as the solvent for the dehydrohalogenation of of 1,2-dibromo-1,2-diphenylethane
Starting with only the solid, it is found that at 40 degrees Celsius the total gas pressure is .563 atm. Calculate the partial pressure of NH3 and CO2.
Calculate the enthalpy change in kJ when 22.0 g of water at 35.0°C is heated to steam at 115°C.
Calculate the energy necessary to boil 100.0 g carbon disulfide, CS2, at its normal boiling point.
A student dissolves 27.2 g of aniline, C6H7N in 120 mL of water. At what temperature will the solution freeze
A 0.4512 g sample of a primary-standard-grade Na2CO3 required 36.44 ml of a H2SO4 solution to reach the end point of the reaction.
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