An acid, HEl, is formed from a hypothetical element, El, and a subsequent aqueous solution is created with the acid and water. The solution is measured to be 20.09% HEl by weight. Calculate the mol % of the acid in the solution.   Atomic Mass: H: 1.00784 g/mol O: 15.999 g/mol El: 142.93023 g/mol

Q: copper sulphate (CuSo4) with a concentration of 0.00095 mol l-1. If they wanted to prepare one litre…

A: Here, Molecular weight of CuSO4= RAM(Cu)+ RAM(S)+ 4×RAM(O).…

Q: If 4.3048 g NaOH pellets were dissolved in water to make a total of 250.0 mL of solution, what would…

A: The formula required to calculate molarity is

Q: Determine the molarity of a solution formed by dissolving 97.7 g LiBr in enough water to yield 750.0…

A: SOLUTION Mass of LiBr = 97.7 g Molar mass of LiBr = 86.845g/mol Moles of LiBr = 97.7g/86.845g/mol =…

Q: What mass of NaOH can be formed from 15 liters of 0.35M NaCl? What is the mass of the Chlorine…

A: The SI unit for the amount of substance present in a given compound is its number of moles. 1 mole…

Q: How many moles of H2(g) are generated by the complete reaction of 0.145g of Mg(s) with excess…

A: The balanced reaction is ., Mg (s) + 2HCl (aq) ----> MgCl2 (s) + H2 (g)

Q: A solution is prepared by dissolving 98.6 g of NaCl in enough water to form 875 mL of solution.…

A: Given, weight of NaCl = 98.6 g Volume of solution = 875 ml Density of solution = 1.06 g/ml

Q: The concentration of urea in a solution prepared by dissolving 16 g of urea in 36 g of H2OH2O is…

A: In order to calculate the mass % of urea we have to first write down the given data: Mass of…

Q: Determine the molarity of the following compounds, and determine the concentrations of all ions…

A: The number of moles of MgCl2 present in 22.2 L of solution is 1.54 mol. The number of moles of AgBr…

Q: The equation below only shows the overall reaction between sodiun sulfite and hydrochloric acid.…

A: The chemical reaction is the representation of an equation that involves the chemical symbols of all…

Q: Calculate the molarity of each of these solutions. a. A 4.053-g sample of NaHCO3 is dissolved in…

A:

Q: What is the mass of sodium phosphate (163.94 g/mol) that yields 1.00 g of calcium phosphate (310.18…

A: Given : Molar mass of Na3PO4 = 163.94 g/mole Molar mass of Ca3(PO4)2 = 310.18 g/mole

Q: WEIGHT/MOLE CALCULATIONS . Calculate the prama of substance required to prepare the following…

A: Solution [9.] (a.) 250 ml of 5 % (w/v) NaNO3 = 250 ml × 5 g / 100 ml NaNO3 = 12.5 g NaNO3 (b.) 500…

Q: An acid, HEI, is formed from a hypothetical element, El, and a subsequent aqueous solution is…

A:

Q: A solution is prepared by dissolving 0.6194 g oxalic acid (H2C2O4) in enough water to make 100.0 mL…

A: Molarity :  It is defined as the number of moles of solute present in one liter of solution.  M=…

Q: For each of the acid-base reactions, calculate the mass (in grams) of each acid necessary to…

A: Given,

Q: Pure water has a density of 1.000 g/mL. Assume that water determines the volume of the solution.…

A:

Q: Consider the following reaction of K2S2O3 for neutralizing chlorine in industrial bleaching. K2S2O3…

A:

Q: A solution is prepared by dissolving 0.6584 g oxalic acid (H2C2O4) in enough water to make 100.0 mL…

A:

Q: A solution is prepared by dissolving 15.0 g of NH3 in 250.0 g of water. The density of the resulting…

A:

Q: A solution is made by dissolving 28.5 g of iron(III) fluoride, FeF3, in enough water to make exactly…

A: Given data contains, Mass of iron (III) fluoride is 28.5 g. Volume of the solution is 250 mL=0.25 L…

Q: Calcium in river water samples can be precipitated out as Ca10(PO4)6(OH)2 (1,004.6 g/mol). The…

A: IMPORTANT POINTS Approximate value of Calcium present in nearby laboratory water is given in the…

Q: An unknown mass of NasPO4(s) is dissolved in water to form 50.00 mL of solution. This is Solution A.…

A: Let the mass of Na3PO4 dissolved = X gm Molar mass of Na3PO4 = 163.94 gm Number of moles of Na3PO4 =…

Q: A solution is made by dissolving 23.4 g of potassium sulfate, K₂SO4, in enough water to make exactly…

A: Given,  The mass of K2SO4 = 23.4 g.  The volume of the solution = 500. mL The molarity of K2SO4 , K+…

Q: Whens 28 g of KOH dissolves in enough water to make 250 mL of solution, what is the resulting…

A: We have 28 g KOH , 250 ml of solution, we have to calculate the Molarity.

Q: 73.  The hardness of water (hardness count) is usually expressed in parts per million (by mass) of…

A: 1 mol CaCO3 gives 1 mol of Ca2+.

Q: The steps to balancing a neutralization reaction when given a verbal description can be summarized…

A: Balance Chemical equation means number of atoms or ions should be equal in both side (reactant and…

Q: molarity of Na+ in a solution made by dissolving 12.5 g Na2CrO4 in enough water to form exactly 750…

A: The molarity of a solution is given by,M=moles of solutevolume of solutionmL×1000=given mass of…

Q: A solution is made by dissolving 22.3 g of ammonium acetate, NH,CH;CO0, in enough water to make…

A: Molarity = (mass/molar mass)/volume (L)

Q: Question attached

A: Given: Number of sodium ions =  4.408×1020 Then, Dilution doesn't influence the moles of solute.

Q: Sodium bicarbonate can be used to neutralize stomach acid, HCl(aq) and costs approximately 50 cents…

A: NaHCO3(s) + HCl(aq) --> NaCl(aq) +CO2(g) + H2O(l) At equivalence point Number of moles of NaHCO3…

Q: A solution is made by dissolving 17.8 g of magnesium sulfite, MgSO3, in enough water to make exactly…

A: Molar mass of magnesium sulfite = 104.4 g/ mol  Molarity = moles / Volume (L)

Q: 217.67 g of mercurous sulfate is dissolved in enough water to form an unknown concentration of…

A:

Q: The concentration of glucose in a healthy person should be less than 1400 mg/L. Express this…

A: here, Given molar mass is 180.156g/mole and concentration is 1400mg/L we have to first convert g/L,…

Q: What type of electrolyte is this solute? CH3OH(l)          CH3OH(aq)

A: Electrolyte are the solutions that conducts electrically when in polar solvent like water. Non…

Q: An aqueous solution of ethylene glycol, C₂H6O2, is prepared by dissolving 18.42 g of C₂H6O2 (solute)…

A:

Q: What is the final cesium ion concentration when 75. g Cs2CO3 is dissolved in enough water to make…

A: Given: Mass of Cs2CO3 dissolved = 75 g. And volume of solution = 963 mL = 0.963 L…

Q: mol M = L %3D A solution is made from 0.315 mol of Na Cr207. If the volume of the solution is 25mL,…

A: In this question, we want to determine the Molarity of the Na2Cr2O7 Solution. How we can determine…

Q: A 0.772 g sample of a mixture containing only NaBr and CaBr2 is dissolved in water. An excess of an…

A:

Q: Hydrochloric acid, the contents are 36.0% HCl by the mass and have a density of 1.18 g/mL.  a) What…

A: Given :Hydrochloric acid = 36.0% HCl by the mass i.e., 100 g of solution will contain 36 g of…

Q: If 92.8 g of sodium nitrite is dissolved in sufficient water to prepare 2.3 L of solution, the…

A: Definition: Molarity is a concentration term for a solution. The molarity of a given solution is…

Q: Calculate the molarity of a solution that contains 10.0% sulfuric acid by weight. The density of…

A: Percent by weight (mass %) = 10.0 % Density = 1.07 gm/ml = 1070 gm/L (1 L = 1000ml)

Q: Tastes bitter has a H+ ion molarity of 1 x 10-9 mol/L + pH = 9 physical property of a base tend to…

A: Bases produce OH- ions in solution and acids produce H+ ions when dissolved in water. For example,…

Q: An acid, HEL is formed from a hypothetical element, El, and a subsequent aqueous solution is created…

A: Mdd

Q: During a lab preparation of aspirin, a student used 3.10 g of salicylic acid and an excess amount of…

A: Given,

Q: Consider the following reaction. MgCl2(aq)+2NaOH(aq)⟶Mg(OH)2(s)+2NaCl(aq) A 177.0 mL solution of…

A: Introduction :  Since for calculation of mass of Mg(OH)2 we need to calculate limiting reagent .…

Q: 249.45 g of mercurous sulfate is dissolved in enough water to form an unknown concentration of…

A: Initial solution is diluted to 1.19 M  i.e. Molarity of final solution = 1.19 M  Mass of mercurous…

Q: How many grams of water (H2O) would be produced from the reaction of 4.5 moles of hydrochloric acid…

A: Limiting reagent is a reactant that, when gets over in a course of reaction, the reaction stops. In…

Q: a 135- g sample of seawater is evaporated to dryness, leaving 4.73 g of solid residue (the salts…

A: Given: Mass of sample of seawater(solution) = 135 g Mass of solid residue (solute) = 4.73 g

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".