Water “softeners” remove metal ions such as Ca2+ and Fe3+ by replacing them with enough Na+ ions to maintain the same number of positive charges in the solution. If 1.0×103 L of “hard” water is 0.015 M Ca21 and 0.0010 M Fe3+, how many moles of Na+ are needed to replace these ions?

Q: The concentration of Mg2* in a sample of coastal seawater is 1.08 g/kg. What is the molar…

A: concentration of Mg2+ = 1.08 g / kg 1.08 g/Kg means 1.08 g of Mg2+ in 1 Kg ( = 1000 g) Molar mass of…

Q: + Water "softeners" remove metal ions such as Ca²* and Fe³* by replacing them with enough Na ions to…

A: Given data,Volume of solution=7.96×102LMolarity of Ca2+=0.0357 MMolarity of Fe3+=0.00151 M

Q: What volume, in mL, of a 2.0 M NaOH is required to react with 0.06825 mol of copper (II) nitrate,…

A: It is given that 2.0 M NaOH is required to react with 0.06825 moles of copper nitrate, and the…

Q: What is the molarity of a solution prepared by dissolving 0.178 moles of KI in enough water to make…

A: Given, n= 0.178 mol. Volume = 750 mL                = 0.75 mL.

Q: A mixture of bases can sometimes be the active ingredient in antacid tablets. If 0.4826 g of a…

A: Given data: Mass of the mixture = 0.4826 g Volume of HNO3 = 17.30 mL Molarity of HNO3 = 1 M Formula…

Q: What mass of Fe(OH)3 would be produced by reacting 75.0 mL of a 0.0734 M Fe(NO3)3 solution with 125…

A: Given: Concentration (molarity) of  Fe(NO3)3 = 0.0734 M Volume of Fe(NO3)3 = 75.0 mL Concentration…

Q: 4. Calculate the molarity of each of the following solutions: (a) 10.0 g H,SO, in 250 mL of solution…

A: Answer: These questions are based on the basic understanding of concentration terms and relation…

Q: If a student wants to make 205.0 mL of a 1.12M stock solution of SrCl 2, how many grams of solid,…

A: Given that : The volume of stock solution = 205.0 mL Molarity of stock solution = 1.12 M We have to…

Q: A chemist prepares a solution by dissolving 0.3 mole of CaCl2 in enough water to make 1000 mL of…

A: Given: The number of moles of CaCl2 = 0.3 mole The volume of the solution = 1000 mL We have to…

Q: For the reaction 3 КОН + Н, РО, → K,PO, + 3 H,0 how many grams of phosphoric acid, H3PO4, are needed…

A: Consider the molar masses of reactant and product species as; Molecular mass of KOH = 56.10 g/mol…

Q: Find the mass of barium metal (in grams) that must react with O2 to produce enough barium oxide to…

A:

Q: Copper(II) hydroxide reacts with sulfuric acid to produce copper(II) sulfate. What volume (in mL)…

A: By equating total no. Of moles of both species we can determine volume required.

Q: 2NaOH + H2SO4 → 2H2O + Na2SO4             How many grams of sodium sulfate will be formed, if you…

A: In order to determine the grams of sodium sulfate produced in the reaction, the number of moles of…

Q: Calculate the molarity of the following solutions: A) 6.060 mol of HCl in 3.41 L of solution.   B)…

A: Given information,    A) 6.060 mol of HCl in 3.41 L of solution.    B) 0.0282 mol of BaCl2 in 8.81…

Q: If 45.5 g of BaCl 2 is dissolved in water to produce 2.74 L of solution, what is the molarity of the…

A: Given that -  Mass or weight of barium Chloride, BaCl2 = 45.5 g  Volume of barium Chloride Solution…

Q: 1. What is the percent by mass concentration of acetic acid, CH3COOH, in a vinegar solution that…

A: 1. Mass of acetic acid = 54.50 g Density of solution = 1.005 g/ml Volume of solution = 1.000 L =…

Q: If 50.0 mL of a 0.10 M solution of sodium chloride is mixed with 50.0 mL of 0.10 M magnesium…

A: The solubility of NaCl and MgCl2 in water is very high and 3 mol of Cl- ions will be obtained when…

Q: How many grams of phosphoric acid is contained in a water solution of the acid

A: Balanced chemical equation: 3KOH + H3PO4 ------> K3PO4 + 3H2O

Q: Write the balanced COMPLETE ionic equation for the reaction when aqu

A: Reaction takesplace and the balanced equation is      NiCl2 (aq) + Na2S(aq)  → NiS (s) + 2…

Q: If 25.5 mL of a 0.123 M solution of iodide was added to 22.3 mL of a 0.209 M solution of iodate ions…

A: The reactants given are iodide i.e I- and Iodate i.e IO3- and the product forming is I3-. Hence the…

Q: Dilution a. 53.4 mL of a 1.50 M solution of NaCl is on hand, but you need a 0.800 M solution. How…

A: Dilution of the solution: On dilution of the solution with the pure water, the mole of solute…

Q: Specify what ions are present in solution upon dissolvingeach of the following substances in water:…

A:

Q: What volume of each of the following acids will react completely with 30.00 mL of 0.275 M NaOH? (а)…

A: Volume of NaOH = 30.00 ml Concentration of NaOH = 0.275 M

Q: Oxalic acid crystals have the molecular formula (CO2H)2 ∙2H2O. Calculate the molarity of a solution…

A: Molarity is defined as the number of moles of solute dissolved per liter of the solution.  That is,…

Q: A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory…

A: Solution In chemistry, concentration refers to the number of a substance in a very outlined area.…

Q: A typical solution used in general chemistry laboratoris is 3.0 M HCl. Describe, in detail, the…

A: The molarity (M) of a solution is defined as the number of moles of solute present per litre of the…

Q: Mass of flask + sodium oxalate, g: 92.054 g                      Mass of empty flask, g: 91.807 g…

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

Q: With 85% H2SO4 by volume in water being used in the reaction, how many moles of water will be added…

A: 85% volume of H2SO4 means 85 ml H2SO4 in 100 ml Solution. And remaining 15 % is water, that is 15 ml…

Q: What is the molarity of magnesium ions in a 0.881 M solution of magnesium phosphate?

A:

Q: A solution with a total volume of 1000.0 mL contains 37.1 g Mg(NO3)2. If you remove 20.0 mL of this…

A: Given : mass of magnesium nitrate = 37.1 g Volume of solution = 1000 mL

Q: How many moles of H⁺ ions are present in the following aqueous solutions?(a) 1.40 L of 0.25 M…

A: From the dissociation reaction of strong acid, the number of moles of H+ ions can be calculated…

Q: Which solution has the same number of moles of OH as 50.00 ml of 0.100 M solution of Mg(OH)2? O…

A:

Q: A cup of coffee may contain 300. mg of caffeine (C 8H10N4O2).Calculate the molarity (M) of caffeine…

A: Molar Mass of caffeine (C 8H10N4O2) =194 g Mass of caffeine given =300 mg= 0.3 g Mole = Mass Given/…

Q: What is the molarity of a sodium hydroxide solution made by combining 2.0 L of 0.60 M NaOH with 495…

A: Consider the given information is as follows; V1=2.0 L                                          ;…

Q: What is the minimum mass of sodium hydroxide required to neutralize a solution that was prepared by…

A: The reaction between an acid and a base gives salt and water as the product. Such kind of reaction…

Q: When 20.00 mL of 1.005 M H,SO4 is titrated with a solution of NaOH, 44.68 mL of NaOH is required to…

A:

Q: A solution of highly concentrated Sulphuric acid having Molarity 18 M of volume 25 ml was diluted to…

A: The initial molarity of the sulfuric acid is = 18 M The initial volume of the sulfuric acid is = 25…

Q: if you tritate 10.00 mL of vinegar with .310 M NaOH and determine that the end point is reached…

A: Vinegar contains acetic acid , so NaOH react with Acetic acid to neutralize it.

Q: What is the molarity of a solution of H2SO4  if 25 mL of this solution requires 32.15 mL of a 0.600…

A:

Q: 3. How many moles of NaOH would it take to neutralize 1 mol of HCI? How many moles of NaOH would it…

A: The reaction between acid and base is known as neutralization reaction. The reaction of acid and…

Q: Ammonia (NH3,NH3, MM 17.031 g/mol) and hypobromite (OBr−)OBr−) react according to the following…

A: The balanced reaction taking place is given as, => 2 NH3 + 3 OBr- -------> N2 + 3 Br- + 3 H2O…

Q: if 23.18 mL of NaOH solution is required to react completely with 0.320 gg  KHP, what is the…

A: We have to calculate the Molarity of NaOH solution.

Q: How many grams of sodium bromide,NaBr,must be dissolved to prepare 100.mL of a 0.196 M aqueous…

A: Molarity of NaBr Solution = 0.196 M   Volume of Solution = 100 mL   Volume of Solution = 0.1 L…

Q: How many moles of H+ ions are present in the following aqueous solutions? (a) 1.4 L of 0.48 M…

A: Number of moles = V (liter) × Molarity (M) Number of moles = V (mL) × Molarity (M) x 1/ 1000

Q: What is the molar concentration of sodium ion in a 200 mL solution prepared from 1.223 g of sodium…

A: Given, volume of solution = 200 mL            Mass of sodium phosphate (Na3PO4) = 1.223 g…

Q: The following photograph shows the laboratory apparatus required for preparing an aqueous solution…

A: The given diagram is represented as follows:

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.