Chemistry concepts and calculations

A 0.45 M solution of Ammonium Chloride has an acidic pH . A. Write a net ionic e

A 0.45 M solution of Ammonium Chloride has an acidic pH . A. Write a net ionic equation . B- for the reaction in part a, write the equilibrium constant from a consideration of Kb …

A 0.450-gram sample of impure CaCO_3(s) is dissolved in 50.0 mL of 0.150 M HCI(a

A 0.450-gram sample of impure CaCO_3(s) is dissolved in 50.0 mL of 0.150 M HCI(aq). The equation for the reaction is The excess HCI(aq) is titrated by 4.80 mL of 0.125 M NaOH(aq).…

A 0.4505 g sample of CaCO3 was dissolved in the HCl and the resulting solution d

A 0.4505 g sample of CaCO3 was dissolved in the HCl and the resulting solution diluted to 25.00 mL in a volumetric flask. A 25.00 mL aliquot of the solution required 29.25 mL of E…

A 0.4527 g sample of pewter, containing tin, lead, copper, and zinc, was dissolv

A 0.4527 g sample of pewter, containing tin, lead, copper, and zinc, was dissolved in acid. Tin was precipitated as SnO2·4H2O and removed by filtration. The resulting filtrate and…

A 0.4557 g sample of p containing tin, lead, copper, and zinc, was dissolved in

A 0.4557 g sample of p containing tin, lead, copper, and zinc, was dissolved in acid. Tin was precipitated as Sno2 4H20 and removed by filtration. The resulting filtrate and washi…

A 0.4627 g sample of pewter, containing tin, lead, copper, and zinc, was dissolv

A 0.4627 g sample of pewter, containing tin, lead, copper, and zinc, was dissolved in acid. Tin was precipitated as SnO2·4H2O and removed by filtration. The resulting filtrate and…

A 0.4640 g sample of pewter, containing tin, lead, copper, and zinc, was dissolv

A 0.4640 g sample of pewter, containing tin, lead, copper, and zinc, was dissolved in acid. Tin was precipitated as SnO2·4H2O and removed by filtration. The resulting filtrate and…

A 0.4668 g sample of pewter, containing tin, lead, copper, and zinc, was dissolv

A 0.4668 g sample of pewter, containing tin, lead, copper, and zinc, was dissolved in acid. Tin was precipitated as SnO_2 middot 4H_2 O and removed by filtration. The resulting fi…

A 0.4668 g sample of pewter, containing tin, lead, copper, and zinc, was dissolv

A 0.4668 g sample of pewter, containing tin, lead, copper, and zinc, was dissolved in acid. Tin was precipitated as SnO_2 4H_2 O and removed by filtration. The resulting filtrate …

A 0.4676 g sample of pewter, containing tin, lead, copper, and zinc, was dissolv

A 0.4676 g sample of pewter, containing tin, lead, copper, and zinc, was dissolved in acid. Tin was precipitated as.SnO_2 4H_2O and removed by filtration. The resulting filtrate a…

A 0.468 g sample of pentane, C 5 H 12 , was burned in a bomb calorimeter. The te

A 0.468 g sample of pentane, C5H12, was burned in a bomb calorimeter. The temperature of the calorimeter and 1.00 kg of water in it rose from 20.45 °C to 23.65 °C. The heat capaci…

A 0.471 g sample of magnesium (mg) is dropped into a constant pressure coffee-cu

A 0.471 g sample of magnesium (mg) is dropped into a constant pressure coffee-cup calorimeter containing 20.0 g of dilute HCl (hydrochloric acid). The temperature increase from 21…

A 0.4775 g sample of pewter, containing tin, lead, copper, and zinc, was dissolv

A 0.4775 g sample of pewter, containing tin, lead, copper, and zinc, was dissolved in acid. Tin was precipitated as SnO2·4H2O and removed by filtration. The resulting filtrate and…

A 0.4809 g sample of pewter, containing tin, lead, copper, and zinc, was dissolv

A 0.4809 g sample of pewter, containing tin, lead, copper, and zinc, was dissolved in acid. Tin was precipitated as SnO2·4H2O and removed by filtration. The resulting filtrate and…

A 0.4837 g sample of pewter, containing tin, lead, copper, and zinc, was dissolv

A 0.4837 g sample of pewter, containing tin, lead, copper, and zinc, was dissolved in acid. Tin was precipitated as SnO_2 4H_2O and removed by filtration. The resulting filtrate a…

A 0.4840 g sample was treated to separate Bi3* from other metals. The resulting

A 0.4840 g sample was treated to separate Bi3* from other metals. The resulting solution was treated with an excess of MgY2 and, after adjusting the pH to 10, the liberated Mg2+ (…

A 0.4863-g sample of primary standard sodium carbonate (Na2CO3, fw 105.988) was

A 0.4863-g sample of primary standard sodium carbonate (Na2CO3, fw 105.988) was treated with 40.00-mL of a dilute perchloric acid (HClO4, fw 100.458) solution. The solution of boi…

A 0.4863-g sample of primary standard sodium carbonate (Na2CO3, fw 105.988) was

A 0.4863-g sample of primary standard sodium carbonate (Na2CO3, fw 105.988) was treated with 40.00-mL of a dilute perchloric acid (HClO4, fw 100.458) solution. The solution of boi…

A 0.4866 g sample of pewter, containing tin, lead, copper, and zinc, was dissolv

A 0.4866 g sample of pewter, containing tin, lead, copper, and zinc, was dissolved in acid. Tin was precipitated as SnO_2 4H_2 O and removed by filtration. The resulting filtrate …

A 0.495 g sample of cobalt, Co, is added to 183 ml of 0.100 M H2SO4 to produce c

A 0.495 g sample of cobalt, Co, is added to 183 ml of 0.100 M H2SO4 to produce cobalt (II) sulfate and hydrogen gas. Co(s) + H,so,(aq) Coso, (aq) + H,(g) What is the limiting reac…

A 0.495 g sample of cobalt, Co, is added to 183 ml of 0.100 M H2SO4 to produce c

A 0.495 g sample of cobalt, Co, is added to 183 ml of 0.100 M H2SO4 to produce cobalt (II) sulfate and hydrogen gas. Co(s) + H,so,(aq) Coso, (aq) + H,(g) What is the limiting reac…

A 0.4958 g sample of a pure soluble chloride compound is dissolved in water, and

A 0.4958 g sample of a pure soluble chloride compound is dissolved in water, and all of the chloride ion is precipitated as AgCl by the addition of an excess of silver nitrate. Th…

A 0.5 g sample of dry soda ash is dissolved in 50 mL of distilled water. Phenolp

A 0.5 g sample of dry soda ash is dissolved in 50 mL of distilled water. Phenolphthalein is added and 15.00 mL of 0.1000 M HCI is required to reach the FIRST end point. Excess vol…

A 0.50 gram precipitate of AgCl is washed with 237 mL of 0.10 M HCl. Calculate t

A 0.50 gram precipitate of AgCl is washed with 237 mL of 0.10 M HCl. Calculate the number of grams of AgCl that dissolves. Ksp = 1.8 Times 10^-10 A solution contains 0.050 mol of …

A 0.500 mol sample of the gas is held in a piston cylinder at 25 degree C. It ex

A 0.500 mol sample of the gas is held in a piston cylinder at 25 degree C. It expands against the atmosphere until the pressure inside the cylinder is equal to the atmospheric pre…

A 0.500-gram sample of a weak, nonvolatile monoprotic acid. HA. was dissolved in

A 0.500-gram sample of a weak, nonvolatile monoprotic acid. HA. was dissolved in water to make 50.0 milliliters of solution. The solution was then titrated with a stand solution. …

A 0.500-mol sample of O2 gas is in a large cylinder with a movable piston on one

A 0.500-mol sample of O2 gas is in a large cylinder with a movable piston on one end so it can be compressed. The initial volume is large enough that there is not a significant di…

A 0.5035 g of potassium hydrogen phthalate (HC_8H_4O_4, a weak monoprotic acid)

A 0.5035 g of potassium hydrogen phthalate (HC_8H_4O_4, a weak monoprotic acid) required 22.55 ml of a NaOH solution for titration to a phenolphthalein endpoint. What is the molar…

A 0.504 gram sample of a metal, M, reacts completely with sulfuric acid accordin

A 0.504 gram sample of a metal, M, reacts completely with sulfuric acid according to: M(s) + H2SO4 (aq) = MSO (aq) + H2 (g) A volume of 233 mL of hydrogen is collected over water;…

A 0.5087 g solid sample containing a mixture of LaCl3 (molar mass = 245.26 g/mol

A 0.5087 g solid sample containing a mixture of LaCl3 (molar mass = 245.26 g/mol) and Ce(NO3)3 (molar mass = 326.13 g/mol) was dissolved in water. The solution was titrated with K…

A 0.5100-g sample of is dissolved in 12 M HC1 and the resulting solution is dilu

A 0.5100-g sample of is dissolved in 12 M HC1 and the resulting solution is diluted to 250.0 mL in a volumetric flask. How many moles of are used (M.W. = 100.1 g/mol)? What is the…

A 0.513 mol sample of Xe(g) initially at 298 K and 1.00 atm is held at constant

A 0.513 mol sample of Xe(g) initially at 298 K and 1.00 atm is held at constant volume while enough heat is applied to raise the temperature of the gas by 18.5 K. Assuming ideal g…

A 0.516 g portion of a sample that contains sodium oxalate is dissolved in water

A 0.516 g portion of a sample that contains sodium oxalate is dissolved in water to which sulfuric acid has been added. The end point of the titration of the solution with 0.02074…

A 0.521 M potassium hydroxide solution is titrated to theequivalence point by 15

A 0.521 M potassium hydroxide solution is titrated to theequivalence point by 15.27 mL of a 1.240 M phophoric acidsolution. Q. what volume(in mL) of potassium hydroxide wastitrate…

A 0.5215-g sample of CaCO_3, is dissolved in 12 M HCl and the resulting solution

A 0.5215-g sample of CaCO_3, is dissolved in 12 M HCl and the resulting solution is diluted to 250.0 mL, in a volumetric flask. How many moles of CaCO_3, are used (formula mass = …

A 0.5250 sample containing only NaHCO_3 (MW = 84.01) and Na_2CO_3 (MW = 105.99)

A 0.5250 sample containing only NaHCO_3 (MW = 84.01) and Na_2CO_3 (MW = 105.99) was dissolved in 30.0 mL of water. The solution was titrated with 0.2010 M HCI and the first equiva…

A 0.531 g sample of cobalt, Co, is added to 196 mL of 0.100 M H2SO4 to produce c

A 0.531 g sample of cobalt, Co, is added to 196 mL of 0.100 M H2SO4 to produce cobal I) sulfate and hydrogen gas. Cols) + H,SO,(aq) Coso,(aq) + H2(g) What is the limiting reactant…

A 0.531 g sample of cobalt, Co, is added to 196 mL of 0.100 M H2SO4 to produce c

A 0.531 g sample of cobalt, Co, is added to 196 mL of 0.100 M H2SO4 to produce cobal I) sulfate and hydrogen gas. Cols) + H,SO,(aq) Coso,(aq) + H2(g) What is the limiting reactant…

A 0.5412 g sample of pewter, containing tin, lead, copper, and zinc, was dissolv

A 0.5412 g sample of pewter, containing tin, lead, copper, and zinc, was dissolved in acid. Tin was precipitated as SnO_2-4H_2O and removed by filtration. The resulting filtrate a…

A 0.5412 g sample of pewter, containing tin, lead, copper, and zinc, was dissolv

A 0.5412 g sample of pewter, containing tin, lead, copper, and zinc, was dissolved in acid. Tin was precipitated as SnO_2 4H_2O and removed by filtration. The resulting filtrate a…

A 0.551 L solution of 1.37 M sulfurous acid (Ka1 = 1.5e-2 and Ka2 = 1.0e-7) is t

A 0.551 L solution of 1.37 M sulfurous acid (Ka1 = 1.5e-2 and Ka2 = 1.0e-7) is titrated with 1.65 M NaOH. What will the pH of the solution be when 0.7549 L of the NaOH has been ad…

A 0.552g sample of ascorbic acid was dissolved in water to a totalvolume of 20mL

A 0.552g sample of ascorbic acid was dissolved in water to a totalvolume of 20mL and titrated with a .1103 M KOH and the equivalencepoint occured when 28.42 mL of base was added. …

A 0.554 gram sample of a metal, M, reacts completely with sulfuric acid accordin

A 0.554 gram sample of a metal, M, reacts completely with sulfuric acid according to: M(s) + H_2SO_4(aq) rightarrow MSO_4(aq)+H_2(g) A volume of 215 mL of hydrogen is collected ov…

A 0.562-g sample of Alka-Seltzer was analyzed, following the procedure given for

A 0.562-g sample of Alka-Seltzer was analyzed, following the procedure given for this experiment. 35.25 mL of gas was collected in the buret at a temperature of 22 Celcius and atm…

A 0.573 g portion of an ammonium salt containing a single mole of ammonium ion f

A 0.573 g portion of an ammonium salt containing a single mole of ammonium ion for each mole of the salt was reacted with 50.00 mL of 0.2000 M NaOH. After the reaction the solutio…

A 0.576 g sample of a diprotic acid with a molar mass of 255.8 g/mol is dissolve

A 0.576 g sample of a diprotic acid with a molar mass of 255.8 g/mol is dissolved in water to a total volume of 23.0 mL The solution is then titrated with a saturated calcium hydr…

A 0.581 g sample of a diprotic acid with a molar mass of 255.8 g/mol is dissolve

A 0.581 g sample of a diprotic acid with a molar mass of 255.8 g/mol is dissolved in water to a total volume of 29.0 mL. The solution is then titrated with a saturated calcium hyd…

A 0.581 g sample of a diprotic acid with a molar mass of 255.8 g/mol is dissolve

A 0.581 g sample of a diprotic acid with a molar mass of 255.8 g/mol is dissolved in water to a total volume of 29.0 mL. The solution is then titrated with a saturated calcium hyd…

A 0.608 g sample of fertilizer contained nitrogen as ammonium sulfate, (NH4)2SO4

A 0.608 g sample of fertilizer contained nitrogen as ammonium sulfate, (NH4)2SO4.  It was analyzed for nitrogen by heating with sodium hydroxide.  Please show work thanks! (NH4)2S…

A 0.60M solution of a hypothetical weak acid (HB) has a pH of 2.80. a.) Write th

A 0.60M solution of a hypothetical weak acid (HB) has a pH of 2.80. a.) Write the chemical equation for the reaction of this acid with water. identify the bronsted acids and bases…