

the
mas percentage of ccalcium carbonate in the given sample is
71.6%.
< Question 1 of 3 > A 0.450 g sample of impure CaCO3(s) is dissolved in...
A 0.450 g sample of impure CaCO3(s) is dissolved in 50.0 mL of 0.150 M HCl(aq) . The equation for the reaction is CaCO3(s)+2HCl(aq)⟶CaCl2(aq)+H2O(l)+CO2(g) The excess HCl(aq) is titrated by 9.05 mL of 0.125 M NaOH(aq) . Calculate the mass percentage of CaCO3(s) in the sample.
A 0.450 gram sample of impure CaCO3(s) is dissolved in 50.0 mL of 0.150 M HCl(aq). The equation for the reaction is CaCO3(s) + 2HCl(aq) arrow CaCl2(aq) +H2O(l) +CO2(g) The excess HCL (aq) is titrated by 6.45 mL of 0.125 M NaOH(aq). Calculate the mass percentaageof CaCO3(s) in the sample. Please show steps.
A 0.450 g sample of impure CaCO, (s) is dissolved in 50.0 mL of 0.150 M HCl(aq). The equation for the reaction is CaCO,(s) + 2 HCl(aq) — CaCl, (aq) + H, 0(1) + CO2(g) The excess HCl(aq) is titrated by 4.85 mL of 0.125 M NaOH(aq) Calculate the mass percentage of Caco, (s) in the sample. mass percentage: The zinc content of a 1.03 g ore sample was determined by dissolving the ore in HCl, which reacts with the...
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A 0. 563 g sample of a pure carbonate, X_nCO_3(s) was dissolved in 50. 0 mL of 0. 2000 M HCl(aq). The excess HCl(aq) was back titrated with 24. 20 mL of 0. 0980 M NaOH(aq). How many moles of HCl react with the carbonate? What is the identity of the cation, X?
A sample of impure tin of mass 0.521 g is dissolved in strong acid to give a solution of Sn2+. The solution is then titrated with a 0.0448 M solution of NO3−, which is reduced to NO(g). The equivalence point is reached upon the addition of 3.40×10−2 L of the NO3− solution. Find the percent by mass of tin in the original sample, assuming that it contains no other reducing agents.
A 0.6739 g sample of a pure carbonate, X,CO,(s), was dissolved in 50.0 mL of 0.1850 M HCl(aq). The excess HCl(aq) was back titrated with 24.70 mL of 0.0980 M NaOH(aq). How many moles of HCl react with the carbonate? moles of HCI = mol What is the identity of the cation, X? cation: A standardized solution that is 0.0100 M in Na+ is necessary for a Hame photometric determination of the element. How many grams of primary-standard-grade sodium carbonate...
An impure sample of lime weighing 0.150g was reacted with 50.00cm3 of 0.8mol/L hydrochloric acid. After the reaction was complete the solution was transferred to a 250cm3 volumetric flask and made up to the mark with distilled water. A 25.00cm3 portion of this solution was then titrated against 0.25mol/L sodium hydroxide using methyl orange as the indicator. A 15.00cm3 volume of the sodium hydroxide was consumed. Calculate the percentage purity of lime sample. Unbalanced equations are as follows; CaCO3(s) +...
A 50.0 g sample of ore containing FeBr2 is dissolved in acid and titrated to an end point with 24.80 mL of 0.629 M Cr2O72−. The following redox reaction takes place: Cr2O72− (aq) + Fe2+ (aq) ⟶ Cr3+ (aq) + Fe3+ (aq) a. balance the reaction b. what % of the ore sample if FeBr2 (molar mass = 215.65 g/mol)
A sample of impure tin of mass 0.523 g is dissolved in strong acid to give a solution of Sn2+. The solution is then titrated with a 0.0448 M solution of NO3−, which is reduced to NO(g). The equivalence point is reached upon the addition of 4.05×10−2 L of the NO3− solution. Please type down the answer on a computer not a piece of paper.
A 0.450−g sample of steel contains manganese as an impurity. The sample is dissolved in acidic solution and the manganese is oxidized to the permanganate ion MnO4−. The MnO4− ion is reduced to Mn2+ by reacting with 50 mL of 0.0800 M FeSO4 solution. The excess Fe2+ ions are then oxidized to Fe3+ by 20.5 mL of 0.0100 M K2Cr2O7. Calculate the percent by mass of manganese in the sample. ___% Mn