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1. calculate the volume of 0.50 M NaOH needed to saturate 100.0 ml of 0.50 M Zn(NO3)2 with Zn(OH)2
2. Assuming a 75% recovery of the volume from the first filtration, what volume of cation solution will be used in part B of the procedure? (Hint: you started with 100ml and added NaOH)
consider a stone column 3.00 ft in diameter and 10.00 ft high. What is is mass in pounds if its density is 3.50 g/mL.
A calorimetry experiment determined that the combustion of 1.01 g of H2 reacting with excess O2 producing H2O gave q=143 kJ. Calculate the change in enthaply.
Determine the procedure to make 250ml of 0.1M H3PO4 from concentrated 85%(by mass) H3PO4.
What is the sum of all the coefficients in the balanced equation?
A sample of vanadium haveing 5.67 grams of mass upon heating combined with oxegen of 4.45gramsto make vanadium oxide. Determine the emperical formula for this compound?
determine whether or not it is chiral and specify the absoute configuration of any chiral carbons
Note that the absolute stereochemical configurations of chiral substances cannot be determined from the data. Arbitrarily draw a configuration for an enantiomer (and be consistent with the derivatives); omit wedge/dash bonds for a racemate.
What mass of Fe(OH)3 would be produced by reacting 75.0mL of a 0.0810M Fe(NO3)3 solution with 125 mL of a .150 M NaOH solution.
Pyridine(C5H5N) is a weaker base in H2O than 2,6 lutidine (dimethylpyridine), but we observe that the pyridine-BF3 complex is more stable than the comparable lutidine-BF3. Explain the reason for this inversion in stabilities.
Compute the number of rads and rems of radiation in five years from such a level of plutonium.
A gas expands and does P-V work on the surroundings equal to 337 J. At the same time, it absorbs 177 J of heat from the surroundings. Calculate the change in energy of the gas.
the rate constant for the second order -reaction is NOBr(g)------>NO(g)+1/2Br2(g) is 48 L/mol*min at a certian temperture. How long will it take for 90.0% of a .0200M solution of NOBr to decompose
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