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I) Determine the number of milliliters of 0.0300 M unknown metal hydroxide solution that is required to neutralize 25.00 mL of 0.0150 M phosphoric acid.
3 M(OH)2 (aq) + 2 H3PO4 (aq) ---> M3(PO4)2 (s) + 6 H2O (l)
II) If the above solution was made with 5.0 grams of the M(OH)2, what would be the molar mass of this unknown metal hydroxide?
what is the minimun number of coulombs required to produce 1.06 mol of gold?
1) What is the overall charge state for the tetrapeptide DREAM at physiological pH. The pK values for N-terminal, C-terminal, side chain of asp, arg, glu are 9.0, 3.5, 3.9, 12.5, and 4.1
A piece of metal of mass 27 g at 99?C is placed in a calorimeter containing 45.1 g of water at 21?C. The final temperature of the mixture is 38.7?C.
A sample weighing 25g starts at 99 degrees celsius. It is put in a calorimeter containing 100g water. The water temperature begins at 20 degrees and both water and sample reach equilibrium at 32 degrees. What is the specific heat of the sample?
The use of phenols such as tert-butylcatechol as free-radical scavengers is based on the fact that phenolic hydrogens are readily abstracted by radicals
What was the pH at the end of the reaction? e) What would the final pH be in the absence of any buffer?
If the reaction is allowed to proceed until all substances have reached their equilibrium concentrations, determine delta G for the reaction.
How many grams of the element nickel are contained in 10.0g of a 10.2 wt% solution of nicke sulfate hexahydrate, NiSO4*6H2O?
Assuming that the deformation is completely elastic, compute the amount of stress that is put on the nickel 200 alloy. Use values of Yield Stress, Ultimate Tensile Strength, Coefficient of Thermal Expansion and E for nickel 200 alloy.
A 14.0-g sample of ice at -18.0°C is mixed with 122.0 g of water at 87.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
A hydrocarbon undergoes complete combustion to form 6.9 g CO2 and 2.8 g H2O. What is the empirical formula for the hydrocarbon?
A 20.00mL sample of H3Y was titrated with 0.1000 M NaOH. The first equivalence point was reached after the addition of 14.98mL of base. The second equivalence point was reached after the addition of 30.03mL.
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