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You are asked to prepare 3.9L of a HCN/NaCN buffer that has a pH of 9.70 and an osmotic pressure of 1.27atm at 298K. What masses of HCN and NaCN should you use to prepare the buffer?
during one of the processes at the plant. The two liquids are blended until a specific gravity of 1.445. Determine the mole percentage of the two components in the blend.
What concentration of acetate ion should be present in 0.100 M acetic acid to produce a buffer solution with pH 4.00?
How much heat in is evolved or absorbed in the reaction of 2.28 grams of sodium ( Na) with water( H 2 O), express your answer in kilocalories?
If 42.3 L of PH3 forms when 85.1L of H2 (g) reacts with 167.6 (g) of P4 at STP. What is the percent yield.
If 1.56g of a gas has a volume of 1.00 L at .984 atm and 50 degrees Celcius, what is the molar mass of the compound
What is the mass percent of sucrose (C12H22O11, Mm=342 g/mol) in a 0.350-m sucrose solution?
Draw and label the flowchart and show the degree of freedom analysis for the overall process, the split point, the treatment unit, and the mix point.
If, when you are extracting an aqueous solution with an organic solvent, you are uncertain as to which layer in the separatory funnel is aqueous, how could you quickly settle the issue?
nitroglycerin C3H5(NO3)3 detonates into N2, O2, CO2, and H2O. In addition 6.26 kJ of heat is given off per gram of nitroglycerine denotated. what is the specific heat when 4.65 g of N2 is formed
Why should EH&S and FS professionals avoid inhaling the smoke produced when tar paper and roofing shingles smolder and burn?
Compute the increase in entropy when 3.50 moles of an ideal gas is heated from 250 K to 700 K and simultaneously expanded
A salt water mixture is 33.0% (w/w) walt. (The w/w refers to weight / weight or mass / mass). If there are 300.0 g salt in the mixture, what is the total weight of the mixture?
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