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1) Dissolve Ca(OH)2(s) into a 100 mL solution containing 2.00g of dissolved CaCl2. The satureated Ca(OH)2 solution has an equilibrium pH of 11.68. Determine the molar solubility and the Ksp for Ca(OH)2 from this single pH measurement.
2) You are tasked with preparing 100 mL of a pH=12.00 buffer. Each buffer component must have a concentration of at least 0.10 M.The Following stock reagents are available:
1.0M HCl
1.0M NaOH
Solid NaH2PO4*(H2O)2
what mass of aspirin can be prepared by reacting 5.00 g if salicylic acid with an excess of acetic anhydride?
an aqueous solution containing 21.6 mg of vasopressin in 100.0 ml of solution has an osmotic pressure at 25.0 oc of
Calculate the volume in mL of 1,00g of water at each temperature and then calculate the percentage increase in volume that occurs as water is heated from 4.0 degrees Celsius to 60.0 degrees Celsius.
a chemist makes a solution of 1.33 mol cacl2 and 800 kg water and then discovers that the freezing point of the
The equilibrium constant for this reaction at 1400K is 4.7. A mixture of reactants and products at 1400K contains 0.035 M H2O, 0.050 M CH4, 0.15 M CO, and 0.20 M H2
Calculate the pressure and composition of air 100 miles above the surface of the earth assuming that the atmosphere has a temperature of 0 celsius independent of altitude. The correct answer is 3.27 X 10^-9 bar; yO2=0.015, yN2=0.985 but I don't kn..
1.00 ml of a 3.60 times 10-4 m solution of oleic acid is diluted with 9.00 ml of petroleum ether forming solution a.
Chemistry - Other explained in this solution, If world energy consumption continues to rise at the present rate of 2.4%, how long will it take to double (expressed in years)?
aqueous solutions has the strongest ion-dipole attractions: 0.3 M FeBr3, 0.6 M CaCl2, 0.5 M Ba(NO3)2, 0.2 M (NH4)2SO4, 0.9 M KOH.
A balloon filled with 2.50 moles of helium has a volume of 32.4 L. What will be the new volume if 5.90 moles are added under constant temperature and pressure?
what is the change of enthalpy in condensing 15.0 g of water at 100 degrees C at constant pressure.
Provide a structure for the following compound: UV spectrum: ?max = 272 nm (? = 39,500); EI mass spectrum: m/z = 129 (molecular ion and base peak); IR: 2200, 970 cm-1;
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