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what amount of solid NaOH must be added to 1.0 L of a .15 M H2CO3 solution to produce a solution with [H+] = 3.5x10^-11 M? There is no significant volume change as a result of the addition of the solid.
A 0.1276-g sample of a monoprotic acid (molar mass=1.10x10^2) was dissolved in 25.0 mL of water and titrated with .0633 M NaOH. After 10.0mL of base had been added, the pH was determined to be 5.77. What is the Ka for the acid
although they were formerly called the inert gases at least the heavier elements of group 8 do form relatively stable
Calculate a change in pH when 10 mL of 0.2 M LiOH is added to the buffer made by mixing 50mL of 0.1 M hydrobromous acid (HOBr) and 40 mL of 0.2 M of sodium hydrobromide
Write the total and net ionic equations for the reaction of BaSO4 dissociation, and calculate the trial Ksp for the product formed, when 40 mL of 0.1 M Ba(CH3COO)2 reacts with 60 mL 0.6 M MgSO4 and decide whether a ppt will form
A compound with the molecular weight of 391.98 was determined to be 3.1% Hydrogen, 31.5% Phosphorous, and 65.4% Oxygen. Determine the empirical formula and the molecular formula for the compound.
A voltaic cell is constructed with two Zn+2-Zn electrodes. The two cell compartments have [Zn+2]=5.00 M and [Zn+2]=1.00 x 10^-2 M, respectively. What is the standard emf of the cell?
A buffer solution contains 0.15 mol of propionic acid (C2H5COOH) and 0.28 mol of sodium propionate (C2H5COONa) in 1.50 L. 1.) What is the pH of this buffer?
What will be the effect on your final %carbonate if a drop of HCl is spilled, and is not delivered to the test tube? Explain reasoning.
an inflated balloon has a volume of 0.55 l at sea level 1 atm and is allowed to rise to a height of 6.6 km where the
A solution of ethanol, C2H5OH, has a concentration of 2.36 M. What is the concentration of this solution in (a) mass % of ethanol, (b) molality of ethanol?Densities: d(ethanol) = 0.78 g/mL; d(water) = 1.0g/mL; d(solution) = 0.968 g/mL.
(a) How many moles of acetic anhydride were represented by the 6.00mL (density=1.08 g/mL) used in the synthesis (b) How many excess moles of acetic anhydride were used- over and above the amount needed to react with 3.00 g of salicylic acid
An electron with a mass of 9.11 x 10^-31kg and traveling at a velocity of 3.55 x 10^6 m/s has a wavelength which is measurable. what is the wavelength?
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