Calcium in a 1.6642 g sample is precipitated as Ca3 ( PO4 ) 2 ( FW = 310 g / mol ) weighing 0.6576g . Express the percentage of calcium in the sample as CaCO3 ( FW 100 g / mol )

Q: Consider the reaction 3CaCl,(aq) + 2N23PO4(aq) --> Caz(PO4)2(s) + 6 NaCI(aq) (molar mass of calcium…

A: This question is based on stoichiometry. In this problem we have to find mass of calcium phosphate…

Q: Based on the associated solubility chart, at what temperature would you need to heat a solution of…

A: 1- You can see the curve of NaNO3 between solubility of salt vs temperature. It is straight line…

Q: When treating a mixture of metals (copper and zinc) with an excess of a solution of hydrochloric…

A: Given: A mixture of copper and zinc metal is taken. On reaction of mixture with HCl, 2.24 L of gas…

Q: What is the molarity of a solution that is composed of 9.010 g of Na2CO3 dissolved into water to…

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Q: A 12.00 g of pentane (72.17 g/mol) reacts with 6.500 g of oxygen (32.00 g/mol) to produce carbon…

A: Given that, a 12.0 g of pentane reacts with 6.50 g of oxygen to produce carbon dioxide and water.…

Q: Mark and John, two vinegar enthusiasts, are each tasked to determine the acetic acid content of…

A: Given: Mass of KHP = 0.540 g Molecular weight of KHP = 204.22 g/mol Purity of KHP = 99.4% Volume of…

Q: (Eqn. 3)   1 IO3− + 8 I− + 6 H+ → 3 I3− + 3 H2O    (Eqn. 4)  2S2O32− + I3− → 3I− + S4O62− Multiply…

A: Consider the given equations is as follows; (Eqn. 3)       1 IO3-  +  8 I- +  6 H+  →  3 I3-  +  3…

Q: What is the molarity of 100.0 mL lactic acid solution that is prepared by taking 10.0 mL from stock…

A: Volume of Stock solution taken V = 10.0 mL Density of stock solution d = 1.21 g/mL Mass of stock…

Q: By pipet, 19.00 mL  of a 0.823 M stock solution of potassium permanganate (KMnO4) was transferred to…

A: Solutions comprising a definite solute always follows a generalized expression known as "molarity…

Q: What mass of Fe(OH)3 (MW = 106.87 g/mol) will be obtained when 100. mL of 0.240 M FeCl3 (MW = 162.2…

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Q: 100 KI 90 80 70 KNO3 60 50 40 30 20 10 Solute per 100 g of H₂O (g) 0 0 NH,CI The solution holds 85 g…

A: The above provided graph discusses the solubility of KNO3 in water at varying temperatures.

Q: To determine, by gravimetric analysis, the concentration of barium ions (Ba2") in a given solution,…

A: Molar mass of barium sulphate= 233.38g/mol  Moles of barium sulfate= 1.167/233.38…

Q: You are given a clear solution. You are told that the solution is a 50.0 wt% solution and the molar…

A: Let total mass 100 g Mass of solute 50g. Mass Of solvent = 50g Density = 1.07g/cm3 Volume of solvent…

Q: The parameters involved in the concept of dilution are the following: Volume of tank and brine. O…

A: Dilution is the process in which concentration of solute in a solution by mixing more solvent. To…

Q: 1. Solutions of known % (v/v) is prepared by the use of ... a. balance b. volumetric flask c.…

A: (1) The %(v/v) can be defined as the solute in litres is present in liquid solvent. The %(v/v)…

Q: The solubility of KNO3 (in gr KNO3 per 100 gr water) is 155 gr KNO3 at 75 oC and 38 gr KNO3 at 25…

A: The solubility curve of KNO3 suggest that its solubility is different at different temperatures. As…

Q: An unknown sample containing a mixture of NaCl and Na2CO3 was analyzed to determine the %…

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Q: Glucose (C6H12O6) stock solution is prepared by weighing 0.1232 g standard and diluting it to 100.00…

A: Given;

Q: KHP (aq)+NaOH (aq)-->NaKHP (aq)+H2O(l)   Trial  Vi (mL) Vf (mL) 1 36.19 48.56 2     3       A…

A: According to the chemical equation, the number of moles of KHP react with NaOH are equal.

Q: You were tasked to prepare 477 ml of 3.00 M HNO3. If you were provided a stock solution of 70.5%…

A: Given that -  Volume of HNO3 tasked = 477 mL  Molarity of HNO3 tasked = 3.00 M  Stock HNO3 Solution…

Q: What is the molarity of 1 kg of KNO3 (MW=101.11g) dissolved in 2.75 L of solution?

A: Molarity is the number of moles of solute present in one liter of solution. It is represented by M.…

Q: Mark and John, two vinegar enthusiasts, are each tasked to determine the acetic acid content of…

A: Given: mass of KHP = 0.540 g Volume of KHP stock solution = 10.0 mL Volume of diluted KHP solution =…

Q: What mass of Fe(OH)3 (MW = 106.87 g/mol) will be obtained when 100. mL of 0.240 M FeCl3 (MW = 162.2…

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Q: A 19.51 ݃ sample of impure methylamine, which contains 72.58% (by mass) of CH3NH2 , is reacted with…

A: The ratio of moles of solute to the volume of solution in liters is known as molarity.

Q: We want to determine the purity of alum sample bought in a local pharmacy in Miagao. A Chem 28…

A: Mass of sample = 1.5879 gm  Mass of Al2O3 = 0.1572 gm  Molar mass of potash alum = 474.4 gm/mole…

Q: What volume of hydrogen gas (in mL) at 799 mm Hg and 26 °C can be produced when 2.8 g of MgCO3(s)…

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Q: 1. Determine the mass of Fe(OH)3 that is required to prepare 350 ml of a 5N Fe(OH)3 solution. [Mwt…

A: This question have multiple parts ( not sub parts ) in this case, I will just give details Solution…

Q: What volume (in ml) of the concentrated (stock) H2SO4 (MW = 98 g/mol) is needed to prepare 1.13 L of…

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Q: A 5 litre sample of sulphuric acid solution reacts with 7.5 litres of 15 mol/L potassium hydroxide…

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Q: Pb(NO3)2+2NaCl->PbCl2+2NaNO3 what mass of solid product is produced when 15mL of a 0.25M Pb(NO3)2 is…

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Q: Standardization of NaOH Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 0.785 0. l690g 0.8239 Mass of KHP…

A: The mass of KHP used in trial 1, trial 2 and trial 3 is 0.785 g, 0.690 g and 0.823 g, respectively.…

Q: What volume of hydrogen gas (in mL) at 707 mm Hg and 42 °C can be produced when 2.1 g of CaCO3(s)…

A: Given- Pressure=707mmHg = 707/760 = 0.9303 atm  (1 atm = 750 mmHg) Temperature=42°C = 42 + 273 = 315…

Q: The aluminum in a 1.200g sample of impure ammonium aluminum sulfate was precipitated with aqueous…

A: Mass of Sample is 1.200 g. Mass of anhydrous Al2O3 is 0.2001 g. Calculation of no. of mol of…

Q: Consider the following chemical reaction: BaCl2(aq) + Na2SO4(aq) -----------> 2NaCl(aq) + BaSO4(s)…

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Q: Calculate the molar concentration of H2S04 (98.0 g/mol) in a solution that has a specific gravity of…

A: 95 % (w/w) concentration of sulfuric acid states that the 100 g of solution contains 95 g of…

Q: Solution A was prepared by weighing 6.08 grams of K3Fe(CN)6 (MW 329.2 g/mol) and dissolving the…

A: Given the mass of K3Fe(CN)6 taken to prepare the solution-A = 6.08 g  Molar mass of K3Fe(CN)6 =…

Q: The solubility of KNO3 (in gr KNO3 per 100 gr water) is 155 gr KNO3 at 75 oC and 38 gr KNO3 at 25…

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Q: The concentration of arsenic in an insecticide can be determined gravimetrically through its…

A: Mass% of As2O3 in the insecticide is to be calculated. Molar mass of Mg2As2O7 and As2O3 is given.…

Q: The density of commercial concentrated HNO3 is 1.41 g/mL The concentrated acid contains 69% (w/w of…

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Q: Solution A was prepared by weighing 6.08 grams of K3Fe(CN)6 (MW 329.2 g/mol) and dissolving the…

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Q: What is the acetic acid concentration of Mark’s and John’s vinegar in molarity given that the…

A: Standardisation of KOH 0.540 g of KHP require 2.80 mL of KOH                         Molar mass of…

Q: What mass of Fe(OH)3 (MW = 106.87 g/mol) will be obtained when 100. mL of 0.240 M FeCl3 (MW = 162.2…

A: The balance equation: FeCl3(aq)  +  3NaOH(aq)  --->  Fe(OH)3(s)  + 3NaCl(aq) 1 mol              3…

Q: Calcium chloride and sodium hydroxide react according to the equation: CaCl2(aq) + 2 NaOH(aq) →…

A: The balanced equation is    CaCl2 (aq) + 2 NaOH(aq) → Ca(OH)2(s) + 2 NaCl(aq) Number of moles of…

Q: a piece of zn metal (25)g reacts with 100ml of a 2m hcl solution to form zncl2 and h2 gas. What…

A: Applying concept of limiting reagent.

Q: Weight of Na2SO4 Sample 0.3512 g   C. Total Vol. of Precipitant (BaCl2) used WITH 1M BaCl2…

A: Given that the weight of Na2SO4 sample is 0.3512 g.

Q: 2MnO, + 5C,0;+ 16H* 4 4 2MN²+ + 10 CO, + 8H,0 Here, 20 mL of 0.1 M KMNO, is equivalent to

A: Given data : 20 mL of 0.1 M KMnO4

Q: It was found that 24.7 mL of 0.184 N HI solution was required to neutralize 20.0 mL of a Ba(OH)2…

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Q: "Concentrated" sulfuric acid solution is 95% sulfuric acid by mass (and the remainder water) and has…

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