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The water solubilities of oxalic acid and sodium oxalatte at room temperature are 10 g/100 mL and 3.7g/100mL, respectively. Could you prepare oxalic acid by adding HCl to a solution of sodium oxalate, cooling it to room temperature, and filtering the resulting mixture? Explain why or why not.
A 1L vessel at 0C contains .23 mol N2, 1.6 mol of H2 and1.9 mol CH4. Calculate the pressure of the mixture and the partial pressure of each constituent gas.
The pKa values for some weak acids are given Which is the strongest acid of the group. A. pKa=2.5 B. pKa=7 C. pKa=9.2 D. pKa values have nothing to do with acid strength
when a solution of cuii chloride cucl2 is added to a solution of potassium sulfide k2s a black precipitate of copper
A reaction vessel contains these compounds at equilibrium. What will happen if the volume of the container is reduced by 50% at constant temperature?
a sample of He gas has a volume of 900 mL and a pressure 2.50 atm at 298 K. What is the new pressure when the temperature is changed to 336 K and the volume is decreased to 450 mL?
A colorless unknown substance is spotted on a TLC plate and developed in the correct solvent. The spots do not appear when visualization with a UV lamp or iodine vapors is attempted
To what volume must 558 mL of 13 M Ca(OH)2 solution be diluted to make a 3 M Ca(OH)2 solution?
a 322 ml container holds 0.146 g of ne and an unknown amount of ar at 35degc and a total pressure of 635 mmhg.
What type of strain does chair cyclohexane have significantly more of compared to n-hexane. A) angle
The temperature of the solution drops by 22.4 degrees Celsius. If the specific heat of the solution is 4.18J/g degrees C, calculate the enthalpy of the solution of ammonium nitrate.
a sample of a gas has a mass og 0.311g. its volume is 0.225 L at a temperature of 55 degrees C and a pressure of 886 mmHg. find its molar mass
calculate delta s values for following reactions. in each case, account for the sign of delta s. a) C2H4(g) + H2(g) ---> C2H6(g)
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