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What is the approximate pH at the equivalence point of a weak acid-strong base titration if 25 mL of aqueous formic acid requires 29.80 mL of 0.0567 M NaOH? Ka for formic acid = 1.8 x 10-4
how much energy is required to vaporize 98.6 g of ethanol at its boiling point if its Hvap is 40.5 kj/ mol ?
If a 180 mg piece of gold (density =19.32 ) is hammered into a sheet measuring 2.41.0 , what is the average thickness of the sheet in meters.
Did the. Temperature oof the water rise or fall when the nh4no3 was added? Explain this in terms of heat ttransfer.
A sample of oxygen gas has a volume of 131 L at 25°C and a pressure of 0.982 atm. Calculate the volume of this oxygen sample at STP.
Stoichiometry explained in this solution, If the yield of CO2 (g) from the reaction of butane with hydrogen peroxide is only 80.65%, with how many grams of butane and hydrogen peroxide
Calculate the Ksp for zinc phosphate if 1.18 10-4 g of zinc phosphate dissolved to make 5.0 L of a saturated solution.
If 4 g of CuSO4 is dissolved in 9.0x10^2 mL of 0.40 M aqueous NH3, what are the concentrations of Cu2+, Cu(NH34 2+, and NH3 at equilibrium? (Kf = 5x10^13)
For the reaction 2 HCl + Na2CO3 → 2 NaCl + H2O + CO2 what volume of 0.45 M HCl solution would be needed to produce 2.5 L of CO2 at STP
Interhalogens are covalent compounds when one halogen is bonded with another halogen. When 3.299 of iodine reacts with fluorine, 5.768g of IFx is formed. What is the value of x in product formula (IFx)?
A compound with molecular formula C5H11N has no ? bonds. Every carbon atom is connected to exactly two hydrogen atoms.
Suppose that 1.419 g of impure barium hydroxide is dissolved in enough water to produce 213 mL of solution and that 40.4 mL of this solution is titrated to the stoichiometric point with 8.3 mL of 0.0696 M HCl(aq). What percentage of the impure sam..
A cylinder is separated into two sections Y and Z by an insulating frictionless piston and sealed at both ends. Each section has two moles of an ideal gas.
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