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The pH of 1.00L of the buffer containing 1.00M CH3C00Na and 1.00 M CH3COOH after addition of .080 mole NaOH is
Consider the conductance of the following 0.025 M Solutions.How do I use data to classify each solute as either a nonelectrolyte (NE), a weak electrolyte (WE), or a strong electrolyte (SE)
Calculate the mass(in grams) of solids you must measure out to prepare 100 mL each of 0.025 M CuSO4, 0.025 M Ca(NO3)2, 0.025 M Al(NO3)3, and 0.025 M KCl.
Find delta E, delta H, q, and w for the change in state of 1.0 mol H2O(l) at 84 degree C to H2O(g) at 109 degree C. The heat capacity of H2O(l)= 75.3 J/molK, heat capacity of H2O(g)= 25.0 J/molK, an
how do i prepare 50 mL of the 0.00625 M HCl solution by an appropriate dilution of the 0.0125 M HCl solution
A mixture of 8.0mol of H2 (g) and 4.0mol of O2 (g) is placed in a sealed evacuated container made of a perfect insulating material at 28 degrees C. The mixture is ignited with a spark and it reacts
In the iodination of vanillin, why did the product precipitate out when the solution was treated with excess aqueous acid
describe and explain the possible effects on your results of the following experimental errors or variations.
Calculate the heats of combustion for the following reactions from the standard enthalpies of formation listed in the text- (a) 2H2(g) + O2 (g)--> 2H2O (l). (b) 2C2H2 (g) + 5O2 (g) --> 4CO2 (g
How would the ground-state energy levels of X and H compare and would the energy of an electron in the n = 2 level of H be higher or lower than that of an electron in the n = 2 level of X? Explain yo
If 37.5 mL of 0.274 M HCl solution is needed to neutralize an aqueous solution of calcium hydroxide, how manygrams of calcium hydroxide must be in the solution prior to the initiation of the titration
A sample of an ideal gas has a volume of 2.30 L at 2.80 × 102 K and 1.05 atm. Calculate the pressure when the volume is 1.17 L and the temperature is 306 K
When 0.577 L of Ar at 1.20 atm and 227°C is mixed with 0.296 L of O2 at 501 torr and 127°C in a 400. mL flask at 27°C, what is the pressure in the flask
write a balanced equation for the reaction that takes place determine number of moles of KMnO4 used number of moles of iron
A solution of potassium chromate is prepared at pH 7.72. Calculate the fraction of the total chromate in this solution that is present as the chromate ion CrO42-.
Carboxylic acids and phenols can be separated by chemically active extraction if the pH of the aqueous layer is properly chosen. Phenols are sufficiently acidic to be extracted into aqueous sodium h
A mixture of 65 mol% methane, 30 mol% hydrogen, and 5 mol% nitrogen is burned to heat a boiler used to produce hot steam. The ratio of CO2 to CO in the exhaust gas is 10:1.
Construct flow diagrams to show how to separate each of the following pairs of water-insoluble compounds
Calculate the exact concentration of your sodium hydroxide using the date from each trial separately. determine the average of the three trial
Are they right if not then what is their outer shell configuration - What is the outer configuration of d subshell
A water sample is suspected to be contaminated by iron (III) ions. How could you determine if the sample is really contaminated
You wish to extract an organic compound from an aqueous phase into an organic layer (3 to 6 extractions with a separatory funnel). With regard to minimizing the number of transfer steps,