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2Ca (s) + O2 (g) ---->2CaO (s)Delta H rxn = -1269.8 kJ; Delta S rxn = -364.6 J/K
1) Calculate the free energy change for the reaction at 26 degree Celcius.2) Is the reaction spontaneous?
Help me understand specifically why the dissociated phosphate ion would prefer to bond with cations like Al and Zn. I think I know why but help me better understand.
Classify each of the following molecules as polar or nonpolar: a) GeH4; b) I2; c) CF3Cl; d) PCl3; e) BCl3; f) SCl2.
Predict the physical state of ammonia at -95 degrees C (mp =-77degrees C, Bp =-33 degrees C) and normal atmospheric pressure.
When doing the kinetic trial, Peyton mistakenly omitted the starch solution from the kinetic trials. How will this omission change the appearance of the resultant solution (from mixing solutions A&B)
Calculate the binding energy for Cf-253 if one atom of this nuclide has an atomic mass of 253.08417. Express your answer in units of picojoules/nucleus where 1 picojoule = 1x10-12 joule
18.6 grams of a solute with moecular mass of 8940 grams are dissolved in enough water to make 1.00 dm^3 of solution at 25 ^0C. What is the osmotic pressure of the solution?
the mineral greenockite is a yellow sulfide of cadmium that is 78.0% cadmium and 22.o% sulfer. determine the emipirical formula of greenockite.
The reaction in Eq. 1 is zero order with a rate constant of k=0.5 mol L^-1 s^-1. Assuming that the initial concentration of A and B are 10. mol/L and 20. mol/L respectively:
what is the pH of the HF solution before base is added. 3) What is the pH at eqivalence point. 4) what is the pH at 1/2 volume to equivalence point.
will 500 mg of Na3C6H5O7 (258.1g/mol) or 500 mg of CaCO3 (100.1g/mol) neutralize more moles of hydronium ion? Assume that both the C6H5O7^(3-) and CO3^(2-) ions become fully protonated.
What is the mol fraction Na2SO4 in a solution which is 11.5% by weight Na2SO4 (molar mass Na2SO4 = 142.06 g/mol and H2O = 18.016 g/mol)?
A gas is placed in 1.23 L sealed container at a pressure of 0.500 atm and a temperature of 23.0 C. The temperature of the container is increased to 100.0 C.
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