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CuO has the distorted PtS structure. Describe the arrangement of the copper and oxygen atoms
The next three (3) problems deal with the titration of 331 mL of 0.501 M carbonic acid (H2CO3) (Ka1 = 4.3 x 10-7, Ka2 = 5.6 x 10-11) with 1.5 M KOH.
in an extraction of benzoic acid from a three part mixture containing benzoic acid methyl orange and previously
The term water of hydration is applied to which to which of the following. A) water molecules required to dissolve a solid B) water molecules associated with ions in solution
the percent by mass of bicarbonate in a certain alka seltzer product is 32.5. calculate the volume of c02 generated at
the exhaled air contains 6.2% H2O and 15.3% O2 by volume. How many moles of H2O are expelled from the body each minute? How many moles of O2 are absorbed by the body each minute?
Explain how the calculated percent NaHCO3 and Na2CO3 by mass would be affected if the initial mixture were wet with water.
At a potential of -1.00 V vs. SCE, carbon tetrachloride (CCl4) in methanol undergoes a reduc- tion to chloroform (CHCl3) at a mercury cathode:
It takes 54.0 J to raise the temperature of an 8.00 g piece of unknown metal from 13.0rm ^circ C to 24.5^circ{C}. What is the specific heat for the metal?
The Calfhead stream (flow rate 0.05m3s-1) discharges into the Oxhead river (flow of 3.00 m3.s-1). It is proposed to discharge waste into the Calfhead stream but the EPA requires a stream mixing study be undertaken.
Calculate the volume of 1M solution of HCL needed for 1 unit shift of the pH of the following solutions: A. 100 mL of 0.01 M solution weak acid (pKa = 6) and 0.05 M of its sodium salt
Use the following information to find H °f of gaseous HCl: N2(g) + 3H2(g) ? 2NH3(g) ?H°rxn = - 91.8 kJ N2(g) + 4H2(g) + Cl2(g) ? 2NH4Cl(s) ?H°rxn = - 628.8 kJ NH3(g) + HCl(g) ? NH4Cl(s) ?H°rxn = - 176.2 kJ
1)Acetic acid, CH3COOH, is a weak monoprotic acid (pKa=4.74 at 25oC). What is the pH of 0.191 mol/L CH3COOH(aq) at 25oC? Give your answer accurate to two decimal places. 2)Diethylamine, (C2H5)2NH, is a weak base (pKb=3.16 at 25oC)
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