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Exactly 0.1120 g of pure Na_2CO_3 was dissolved in 100.0 mL of 0.0497 M HCL What...
if 54.2g of CaCl2 are dissolved in 100.0 ml of pure water. what is the concentraion...
if 54.2g of CaCl2 are dissolved in 100.0 ml of pure water. what is the concentraion of the solution in g/l and in M.
If 1.85 g MgO is combined with enough 1.00 M HCl to make 100.0 mL of...
If 1.85 g MgO is combined with enough 1.00 M HCl to make 100.0 mL of solution in a coffee-cup calorimeter, the temperature of the resulting solution increases from 21.3°C to 35.7 °C. Calculate the enthalpy change for the reaction per mole of Mgo. Assume that the specific heat capacity of the solution is 4.18 J/g.K, and the density of the solution is 1.00 g/mL. A 0.704 g of a pure acid, HA, is dissolved in water and an acid-base...
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)...
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...
A 4.36-g sample of an unknown alkali metal hydroxide is dissolved in 100.0 mL of water....
A 4.36-g sample of an unknown alkali metal hydroxide is dissolved in 100.0 mL of water. An acid-base indicator is added and the resulting solution is titrated with 2.50 M HCl(aq)solution. The indicator changes color signaling that the equivalence point has been reached after 17.0 mL of the hydrochloric acid solution has been added. A) What is the molar mass of the metal hydroxide? Express your answer with the appropriate units. B)What is the identity of the alkali metal cation:...
A 0.2726 g sample of metal was dissolved in 50.00 mL of 0.500 M HCl. After...
A 0.2726 g sample of metal was dissolved in 50.00 mL of 0.500 M HCl. After all the metal had dissolved, the leftover acid was titrated with 0.1054 M NaOH. If 24.36 mL of 0.1054 M NaOH were required to neutralize the leftover acid, what was the atomic mass of the metal? The metal dissolved to form M+2 ions in solution. The correct answer is 24.3g, please show all your work, thank you.
A 4.36 g sample of an unknown alkali metal hydroxide is dissolved in 100.0 mL of...
A 4.36 g sample of an unknown alkali metal hydroxide is dissolved in 100.0 mL of water. An acid-base indicator is added, and the resulting solution is titrated with 2.50 M solution of HCl. The indicator changes colour, signalling that the equivalence point has been reached after 17.0 mL of the hydrochloric acid solution has been added. Determine the molality of this alkali metal hydroxide solution and What is the mass percentage of the metal hydroxide in the solution? Determine...
A 4.36-g sample of an unknown alkali metal hydroxide is dissolved in 100.0 mL of water....
A 4.36-g sample of an unknown alkali metal hydroxide is dissolved in 100.0 mL of water. An acid-base indicator is added and the resulting solution is titrated with 2.50 M HCl(aq)solution. The indicator changes color signaling that the equivalence point has been reached after 17.0 mL of the hydrochloric acid solution has been added. Part B What is the identity of the alkali metal cation: Li+, Na+, K+, Rb+, or Cs+? Li+ Na+ K+ Rb+ Cs+ Part A What is...
If I mixed 100.0 mL of a nitric acid solution of pH = 2.40 with 100.0...
If I mixed 100.0 mL of a nitric acid solution of pH = 2.40 with 100.0 mL of a nitric acid solution of pH = 2.70, what would be the pH of the mixture? Write your answer to 2 digits beyond the decimal (e.g., 8.63) If 5.15 grams of iron(III) nitrate (molar mass = 241.86 g/mol) is dissolved in enough water to prepare exactly 150.0 mL of solution, what would be the molar concentration of the nitrate ion? 0.284 M...
A 0.450 g sample of impure CaCO3(s) is dissolved in 50.0 mL of 0.150 M HCl(aq)...
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.
proper number of significant figures? 7. reacted with 100.0 mL of 0.333 M HCL The A...
proper number of significant figures? 7. reacted with 100.0 mL of 0.333 M HCL The A 1.522 g sample of impure calcium carbonate was reac mpleted required 35.50 ml of 0.300 M NaOH to excess HCL remaining after the reaction was completed regu calcium carbonate? (Molar mass of calcium reach the end point. What is the wt% purity of the calcium carbona carbonate is 100.086 g/mole)
If 1.85 g MgO is combined with enough 1.00 M HCl to make 100.0 mL of solution in a coffee-cup calorimeter, the temperature of the resulting solution increases from 21.3°C to 35.7 °C. Calculate the enthalpy change for the reaction per mole of Mgo. Assume that the specific heat capacity of the solution is 4.18 J/g.K, and the density of the solution is 1.00 g/mL. A 0.704 g of a pure acid, HA, is dissolved in water and an acid-base...
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...
If I mixed 100.0 mL of a nitric acid solution of pH = 2.40 with 100.0 mL of a nitric acid solution of pH = 2.70, what would be the pH of the mixture? Write your answer to 2 digits beyond the decimal (e.g., 8.63) If 5.15 grams of iron(III) nitrate (molar mass = 241.86 g/mol) is dissolved in enough water to prepare exactly 150.0 mL of solution, what would be the molar concentration of the nitrate ion? 0.284 M...
proper number of significant figures? 7. reacted with 100.0 mL of 0.333 M HCL The A 1.522 g sample of impure calcium carbonate was reac mpleted required 35.50 ml of 0.300 M NaOH to excess HCL remaining after the reaction was completed regu calcium carbonate? (Molar mass of calcium reach the end point. What is the wt% purity of the calcium carbona carbonate is 100.086 g/mole)
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