@X@user.full_name@X@ @GMU: Which reaction below would result in a net decrease in entropy?

John Schreifels  @GMU: What is the change in mass of 15N when it is formed from protons, electrons and neutrons if the atom has a mass of 15.00010897 amu? The masses of the proton, electron and neutron are 1.00728 amu, 0.000549 amu and 1.00867 amu, respectively.

@X@user.full_name@X@ @GMU: What is the temperature at which the reaction below becomes spontaneous, if the standard entropies of reactants and products at 25oC are So (C(gr)) = 5.74 J/mol*K, So(H2(g)) = 130.68 J/mol*K, and So (C5H12(g)) = 349.0000J/mol*K and the heat of formation of C5H12(g)) is -146.4400 kJ/mol?C5H12(g) → 5C(gr) + 6H2(g)

@X@user.full_name@X@ @GMU: What is the correct expression for the solubility product of calcium phosphate?Ca3(PO4)2(s) → 3Ca2+(aq) + 2PO43-(aq)

@X@user.full_name@X@ @GMU: Which reactant in the reaction below is an acid (this one first in the answer) and which reactant is a base?NO-3 + HCO-3 → HNO3 + CO3-

@X@user.full_name@X@ @GMU: After 63.431 seconds 66.63 % of A had not reacted. What is the first order rate constant?

@X@user.full_name@X@ @GMU: What is the conjugate base and base dissociation constant of HClO if its acid dissociation constant is 3.000×10-8 ?

¶ K, lines 111-12. The employee who was fired in ¶ A, lines 12-16 was upset because he believes he was treated differently than former employees who had been fired for similar conduct.  Without a collective bargaining agreement, the fired employee:

@X@user.full_name@X@ @GMU: What is the pOH of 9.68e-4 M HClO3 ?

@X@user.full_name@X@ @GMU: What is the pOH of 4.34e-4 M HI?