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A 0.2527-g sample of a mixture of Mg(OH)2 and Al(OH)3 was treated with 50.00 mL of 0.225 mol L?1 HCl(aq). The resulting solution required 13.73 mL of 0.176 mol L?1 NaOH(aq) to neutralize the excess, unreacted HCl. What was the percentage by mass of Mg(OH)2 in the original sample? When Mg(OH)2 or Al(OH)3 reacts with HCl(aq), the products are a chloride salt, water and CO2(g). Assume that all of the CO2(g) leaves the solution without reacting.
protonated benzoic acid in solution give the Henderson-Hassalbach equation and calculate pH
When methanol, CH3OH, is dissolved in water, a nonconducting solution results. When acetic acid, CH3COOH, dissolves in water, the solution is weakly conductiong and acidic in nature. Describe what happens upon solution dissolution in the two cases..
In a reaction between pure acetic acid and sodium bicarbonate, 10.1 grams of sodium bicarbonate was added to 21.0 mL of acetic acid. Which reactant is the limiting reactant in this reaction?
HCN is a weak acid dissolved in water. (Ka=6.2x10^-10). If a 50.0mL sample of 0.100 M HCL is titrated with 0.100 M NaOH 1) what is the pH at the equivalence point
Do a calculation to check the claim that to fully neutralize 17,000 tons of CaCO3 would require enough 0.0005 M H2SO4 to fill 8 millions swimming pools.
according to equation, how many grams of Zn will remain after the reaction is complete? Equation [5] = CuSO4 (aq) + Zn (s) ----> ZnSO4 (aq) + Cu (s)
If C 6 H 12 O 6 yields C 2 H 5 OH+CO 2 then balance this equation and determine what the percent yield for the reaction is if 575.0 grams of C 6 H 12 O 6 glucose yields 126.4mL of C 2 H 5 OH ethanol?
what is the free energy change (DG) when protons are pumped across the membrane from the side of the membrane with low concentration to the side with high proton concenration at body temperature (37C)? The membrane potential is 0.06. Report your a..
The Ksp of CaSO4 is 4.93× 10-5. Calculate the solubility (in g/L) of CaSO4(s) in 0.300 M Na2SO4(aq) at 25 °C.
How do you find the mass of an unknown acid in a 10mL portion used for titration if my original mass of the unknown acid is 0.307g
the anharmonicity constant is 117.90 cm^-1. Calculate the frequency at which the Q branch for the first overtone will be found.?
The activation energy for a particular reaction is 95 kJ/mol. By what factor will the rate constant increase when the temperature is increased from 50 oC to 62 oC?
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