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1. Volume of acid: 25 mL (We did three trials A, B and C)
2. Initial buret reading (mL) A) 49.5 B)47.5 C.)45.25
3. Final buret reading (mL)A)47.5 B)45.25 C)43.00
4. Volume of NaOH dispensed (mL) A) 2 ml B) 2.25 ml C)2.25 ml
5. Moles of NaOH dispensed?
6. Molar concentration of the acid (moles/L)
Calculate the average acid concentration from the 3 titrations (mol/L):?
Given a restriction enzyme that has a concentration of 50 units/ml but your experiment requires that the concentration be reduced to 2.5 units/ml.
Air is a mixture of N2,O2,Ar,Co2,Ne,He,CH4,lessor amounts of the other gases and possibly substantial amount of H2O in vapor form.
Calculate the amount of N2 gas released (in liters at 37oC and 1 atm) when the diver returns to the surface of the water, where the partial pressure of N2 is 0.80 atm.
MgNH4PO4 6 H2O loses H2O stepwise as it is heated. Between 40 and 60 C the monohydrate is formed, and above 100 C the anhydrous material is formed. What are the phosphorus percentages of the monohydrate and the anhydrous material?
What volume of hydrogen at STP is produced by dissolving 13.49 g of aluminum in excess sulfuric acid? A. 11.2 L B. 14.9 L C. 16.8 L D. 22.4 L
Determine the molarity of a solution prepared by dissolving 4.50 mol of NH4Cl in sufficient water to make 2.00 L of solution.
how does the ability of permanganate (VII) ( when being reduce to Mn2+) to oxidize aqueous chloride , bromide or iodide ions change?
Lakes that have been acidified by acid rain can be neutralized by liming, the addition of limestone (CaCO3). How much limestone (in kg) is required to completely neutralize a 4.3 billion liter lake with a pH of 5.5?
Calculate the amount of vitamin C in mg that are titrated by one milliliter of the 0.05N iodine solution.
You use a properly calibrated explosimeter to measure the flammable hazard inside a tank that contained toluene and may still have some residual product a. inside.
what is the final temperature of A metal sample weighing 34.526 g was heated to 98.0 degrees Celcius then quickly transferred into a styrofoam cup calorimeter containing 74.365 g of distilled water at a temperature of 27.0 degrees celcius.
Titration of the lead and zinc in this aliquot required 34.06 mL of the EDTA solution. Finally, cyanide was used to mask the copper and the zinc in a 25.00 mL aliquot. Titration of the lead required 26.68 mL of the EDTA solution. Determine the com..
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