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Problem- Predict the signs of DH, DS and DG of the system from the following process at 1 atm (normal melting point of ammonia is -77.7°C):
a) Ammonia melts at -60°C
b) Ammonia melts at -100°C
Please illustrate all relevant equations
Write a single equation to show the direct conversion of Mg3N2 into MgO as the exclusive magnesium-containing product
If 23.7 grams of an aqueous solution of barium bromide, BaBr2, contains 6.00 grams of barium bromide, what is the percentage by mass of barium bromide in the solution?
a c-h bond absorbs at 2950 cm-1. replacing the 12c with 14c has a smaller effect on the position than replacing the 1H with 2H (even though the carbon mass is increased by 2 units and the hydrogen mass is only increased by 1 unit). Explain.
joseph priestley discovered oxygen in the eighteenth century by using heat to decompose mercuryii oxide2 hgos heat
Calculate the [Zn2+] in a solution of ZnC2O4 held at a pH of 3.00. Remember C2O4^2- is a weak base so you must consider other equilibria.
You Have 500 mL of a buffer solution containing .2 M CH3COOH and .3 M CH3COONa. What will the pH of this solution be after the addition of 20 mL of 1.00 M NaOH solution? (Ka=1.8x10^-5)
While 25mL of 0.10 mol/L HBr(aq) is titrated with 0.10 mol/L NaOH(aq), explain what is the pH at the equivalence point. Choose an appropriate indicator.
for a first-order reaction it takes 22.2s for the concentration of reactant a to drop from 1.00 to 0.333m. starting
An unkown gas self-possessed of homonuclear diatomic molecules (molecules with two identical atoms) effuses at a rate that is merely 0.355 times that of oxygen gas at the same temperature. Based upon your calculations, identify the gas.
For the following reactions identify any acids or bases present and types of acids or bases present. A, Arrhenius, BL, Bronsted Lowry, L, Lewis abbreviations for types.
explain what is the total pressure in the reaction flask at the end of the reaction. Define what are the partial pressures of the gases in the flask
As an SN2 solvent for reactions like the alkylation of acetaminophen, water would be a poor selection. Explain water is more polar than 2-butanone or DMSO. Explain why are polar, aprotic solvents better than polar, protic solvents like water for S..
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