How many milliliters of 0.120M  H2SO4 are needed to neutralize 0.160g of NaOH? Express the volume in milliliters to three significant digits.   (2.) If 55.0mL of BaCl2 solution is needed to precipitate all the sulfate ion in a 742mg sample of Na2SO4, what is the molarity of the solution?   Express the molarity to three significant digits.        (3.) If 42.0mL of 0.204M HCl solution is needed to neutralize a solution of Ca(OH)2, how many grams of Ca(OH)2 must be in the solution?        Express the mass in grams to three significant digits.

Q: 650.0−g sample of river water taken near an industrial plant contains 27 mg of chromium. What is the…

A: Weight of sample or solution = 650.0 gm Weight of chromium = 27 mg = 0.027 gm (1 gm = 1000 mg)

Q: 3. If 17.0 ml of H3PO4 acid is neutralized by 25.0 ml of 1.5 M NaOH. What is the molarity of H3PO4?…

A: (3) H3PO4 is a tri-protic acid. It reacts with NaOH in 1:3 molar ratio. The balanced chemical…

Q: calculate molarity of acetic acid in vinegar: (volume of NaOH 3ml, cincentration of NaOH 24.215,…

A: Concentration of NaOH = 24.215 M Volume of NaOH used = 3.44 mL Density of vinegar = 1.005 g/mL

Q: How many grams per millilitre of NaCl are contained in a 0.250 M sc

A: The molarity of a solution is defined as the number of moles of a solute present in one liter of…

Q: Express the volume in milliliters to three significant digits.   (1.) How many milliliters of 0.120M…

A: Note : As per our guidelines , we are supposed to answer first question please repost the other…

Q: 2.) 4.75 mL of H20, 3.75 mL of an aqueous 0.030 M SCN" solution, and 12.00 mL of an aqueous 0.015 M…

A: We write down the given data: Initial concentration=0.015M  Initial volume=12.00ml Final…

Q: 7) (30) For questions a - c, you must use dimensional analysis to solve the problems related to the…

A:

Q: 3. A student neutralized 25.0 cm of sod ide solutiUH WiLH U.6 student carried out the experiment…

A: Few questions based on mole concept, which is to be accomplished.

Q: show the solution A 6.42% (w/w) ferric nitrate solution (Fe(No3)3) (241.81 g/mol) has a density of…

A: A solution is a formed by mixing solute and solvent that results in a homogenous mixture. A solution…

Q: What is the molar concentration of SO42 when 257.0 g of Al2(SO4)3 is dissolved with water until the…

A: The molar concentration can be determined by using the formula given below as; Molar…

Q: The solubility of lead (II) chloride is 0.45 g/100 mL of solution. What is the Kep of PbCl2? Express…

A: Given Solubility = 0.45g / 100 ml Molar mass of PbCl2 = 278.2 g/mol

Q: A student was given a solution of unknown molarity of Potassium Hydroxide (KOH). On the lab bench…

A: Part a- Potassium hydrogen phthalate should be chosen as standard solution because the pure form of…

Q: 2. Would the calculated value of the molarity of the NaOH solution be too high or too low or…

A: Here’s how each of these errors would affect the calculated molarity of the NaOH solution:

Q: 6. 100.0 mL of a silver nitrate solution is added to 98.75 g of a water sample. The density of this…

A: Number of Mole- Ratio of given mass of substance to the molar mass of substance is called number of…

Q: 25 mL of a bleach (NaOCl) sample is diluted to 500 mL. An excessive amount of KI is added to the 20…

A: The question involves estimation of sodium hypochlorite present in the given bleach sample . we do…

Q: mass of lactic acid is

A:

Q: A 110.520 g sample of mineral water is analyzed for its magnesium content. The Mg+ in the sample is…

A: ppm refers to parts per million which is a unit to express the concentration. It can be expressed as…

Q: A metal alloy is made up of elements M and N. The mass of a sample of the metal is 114.5 g. Metal M…

A:

Q: 5. A 0.709 g sample of H2C2042H2O is dissolved in water and titrated to a phenolphthalein endpoint…

A:

Q: How many moles of Agl will be formed when 75.0 mL of 0.300 MAGNO, is completely reacted according to…

A: Given,

Q: You add the weighed KHP to a flask containing a 60mL of water rather than 50 mL of water. Explain.…

A: Molarity of NaOH is calculated using standard KHP solution(with known concentration) as follows:…

Q: A railroad tank car carrying 1.5  103 L of concentrated sulfuric acid derails and spills its load.…

A: •Here from given volume and density we calculate mass of actual sulfuric acid present in it. •Than…

Q: Q.1 :What is the molar concentration of CI in a solution prepared by mixing 25.0 mL of 0.025 M NaCl…

A:

Q: A solution contains 217 millimoles of sodium perchlorate in 100. mL of solution. (1) What is the…

A: (1)Convert the millimoles to moles and mL to liter.

Q: If the molecular weight of glycerol is 92.1 g/mole, and its density is 1.26 g/mL. What is the…

A: Given  Molecular weight of glycerol  ( m )   = 92.1 gram/ mole  density ( d )    = 1.26 gram/mL…

Q: 100.0 ml. of 0.800 M KI solution is mixed with 100.0 ml. of 0.500 M Pb(NO), solution. How many grams…

A:

Q: Sulfamic acid is a primary standard that can be used to standardize NaOH. *H3NSO3 + OH → H2NSO, +…

A:

Q: The US Department of Health recommends adding sodium fluoride to municipal drinking water to reduce…

A: Given : Solubility of NaF = 1.5×10-3 g L-1 Molar mass of NaF = 42 g mol-1  Molarity of NaF = ?

Q: is the mass of the oxalic acid (diprotic acid) in the sample and what is its mass percent? (0.753 g…

A: Given that: Mass of impure oxalic acid sample = 1.034g [NaOH] = 0.485M Volume = 34.47ml =…

Q: How many liters of a 0.209 M KI solution is needed to

A: Number of moles = mass/molar mass  Molarity = number of moles/volume of solution(in L)  Volume =…

Q: 5. (a) How many moles of NaOH are contained in 50.0 mL of 0.125 M NaOH solution? (b) How many…

A:

Q: 100 mL of water contain 100 mg of strontium Sr²+. What mass of solid potassium chromate K₂ CrO4…

A:

Q: electiolyte. 65. Twenty-five milliliters of a solution (d = 1.107 g/mL) containing 15.25% by mass of…

A: (a) The reaction of barium chloride with sulfuric acid is, BaCl2(aq) + H2SO4(aq) → BaSO4(s) +…