Q: The fat content of 10 g of commercial ice cream was determined by the Mojonnier method. The weights…

A: To calculate percent weight extracted in third extraction using the weight of fat given after second…

Q: How many grams of Pb(NO,)2 (331.2 g/mol )are needed to prepare 300 ppm (w/v) of Ph (207.2 gmol) in…

A: Given information, Molar mass of Pb(NO3)2 = 331.2 g/mol Volume of solution = 1 L = 1000 mL ppm…

Q: What is the amount in moles of sodium hydroxide in 25.00 cm3 of a solution of concentration 0.10…

A:

Q: How many grams of Na2S2O3 are needed to prepare 87.0 mL of a 5.00 %(m/v) Na2S2O3solution?

A: Percentage mass by volume is defined as moles of solute per 100 mL of the solution and it can be…

Q: 6 How would you prepare 2.5 L of approximately 0.0600 M 13 solution? Calculate the molar…

A: Introduction to Molarity The total number of moles of solute in a given solution's molarity is…

Q: f 50.0 mL of concentrated (18M) sulfuric acid is diluted to a total of 1.0 L, what is the new…

A: Given, Initial concentration (M1) = 18 M. Initial volume (V1) = 50.0 mL = 0.05 L Final volume (V2) =…

Q: It is desired to prepare 900mL of 0.125 normal Ca(OH)2 for use in the reaction:  2HCl + Ca(OH)2 =…

A: The given data contains, Volume = 900 ml = 0.9 LNormality =0.125 N

Q: 10.00 mL of 1.10 M  HCl  diluted to 0.450 L

A:

Q: Calculate the molar concentration of the polycyclic aromatic hydrocarbon (PAH), anthracene (178.23…

A: We have to calculate the molar concentration of water .

Q: What mass of cesium bromide must be added to 0.500 L of water (d=1.00 g/mL) to produce a 0.400…

A: The formula to calculate mass of water is as follows:  Mass of water = (density of water) (volume of…

Q: What is the mass of NaOH required to make a 2.5 molar solution (2.5 moldm-3)?

A:

Q: 4-) If the conductivity of a 0,00100 M Kcl Solution in 134 M5 Cm". then the molar Conductivity of…

A: From the relationship between conductivity and molar conductivity we can solve this problem

Q: Calculate the molarity of K2Cr2O7  when 1.4880g of .02M K2Cr2O7  was diluted to 250mL

A:

Q: What are the respective concentrations (M) of K+ and SO4- obtained by dissolving 0.460 mol K2SO4 in…

A: Molarity is defined as total number of moles of solute present in 1000 ml of solution Molarity =…

Q: Describe how you would prepare 350.0 mL of 0.100 M C12H22O11 starting with 3.00 L of 1.50 МС12Н2О1-

A: The solution of C12H22O11 is provided with - Molarity, M1 = 1.50 M Volume, V = 3.00 L The solution…

Q: A solution of 75 mM tartaric acid (CaH,O6) in water is used as a standard in HPLC analysis. How many…

A: We know that 1 molar solution stands for 1 mole solute is dissolved in 1 litre solution.  Now, we…

Q: One particular pungent gas is the toxic hydrogen sulphide (H2S). Hydrogen sulphide develops an odour…

A: Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: What volume (V) of o.20 M HNO, is needed to neutralize 150 mL of o.6 M NaOH?

A: The ratio of number of moles to the volume of solution in liters is called as molarity. Molarity…

Q: The mercury content of a stream was believed to be above the minimum considered safe—1 part per…

A: Given : Volume of water = 15.0 L = 15000 mL                                     (since 1 L = 1000…

Q: 6. If molar conductivity of HCl solution at 25° C is 425 Scm2 mol'at infinite dilution. The specific…

A: The expression of molar conductivity is shown below: λm =κc where; λm = molar conductivity k =…

Q: Show how to take 3.6E-7 mol/L AgCl and convert it to g/100 mL

A: Given:  3.6 x 10-7 mol/L AgCl  To convert: 3.6 x 10-7 mol/L AgCl  to  g/100 mL AgCl conversion…

Q: Determine the final concentration in mol dm–3 of K+ and SO42– when the following three solutions in…

A:

Q: A closed room is contaminated by carbon monoxide (CO) at a level of 50 ppmv. Knowing the density of…

A:

Q: What are the mole fraction and the mass percent of a solu-tion made by dissolving 0.30 g of KI in…

A: Substitute 0.4 L as volume and I g/mL as the density of water in the expression of density to…

Q: How would you prepare 1.5 L of approximately 0.1 M KMnO4?

A: Given: Volume of KMnO4 = 1.5 L Concentration of KMnO4 = 0.1 M Molar mass of KMnO4 = 158.034 g/mol

Q: Describe the steps to prepare 100.00ml of 2.00M H2SO4 from a concentrated 5.00M H2SO4 solution using…

A: Dilution gets used for decreasing any particular soluton's concentration. This process holds…

Q: Calculate the molar concentration of the polycyclic aromatic hydrocarbon (PAH), anthracene (178.23…

A: Given: Concentration of well water sample = 2.18 ppb Density of well water sample =1.00 g/mL To…

Q: Prepare 2 liter of approximately 0.50M Nacl using solid NaCl

A: Given, Concentration of NaCl solution = 0.50 M = 0.50 mol/L Volume of the solution = 2.0 L…

Q: 15. Calculate the amount of chemical required in each case to make up the volume indicated to the…

A: Molarity: In chemistry, the strength of a solution is called its concentration. This value gives an…

Q: The maximum amounts of lead and copper allowed in drinking water are 0.015mg/kg for lead and…

A: Given : Concentration of lead = 0.015 mg/Kg  And concentration of copper = 1.3 mg/Kg Assuming 100 g…

Q: What is the molar concentration of Ba present in 424 ppm of BaCl, 2H,0(244.3 g/mol) A. 1.73x103 M В.…

A:

Q: Describe how 800ml of o.5M NaoH is prepared from 5M NaoH

A: Initial Concentration of NaOH = M1 = 5 M V1 = volume of 5 M NaOH needed = ? Final Concentration of…

Q: Calculate the number of moles of: sodium hydroxide in 100 cm³ of 0.1 mol dm³ sodium hydroxide…

A: The number of moles = Molarity×volume×10-3

Q: Concentrated ammonia contains 1.10 mil of NH3 dissolved in 2.54 mol H2O. What is the mole fraction…

A: · Number of moles of NH3 in concentrated aqueous ammonia = 1.10 mol· Number of moles of H2O in…

Q: 5-A solution of common salt in water is prepared by adding 30 g of salt ( CaCl2 ) to 100 g of water,…

A: Given: Mass of salt = 30 g Mass of water = 100 g Atomic mass of Ca = 40 g/mol Atomic mass of Cl =…

Q: How would you use a volumetric flask to prepare 250.0 mL of 0.150 0 M K2SO4?

A:

Q: Which is more concentrated? 17ppm or 1690ppb? Show your calculations.

A: Which is more concentrated ?  17 ppm or 1690 ppb

Q: Solve this

A: Molarity is defined as the number of moles of solute in 1 litre of solution. It is designated as M.

Q: N Careers Mail - boss Texas Work HOc HomewcX W College Ph +…

A:

Q: What is the concentration of O2 in freshwater? Air temperature= 295.65 K.  Air pressure = 1…

A: Given: Henry's constant of O2 = 1.3 X 10-3 mol/Kg.bar. Total pressure of air = 1 bar And mole…

Q: What is the mole fraction toluene in a solution made by dissolving 5.00 g of toluene (CZH8) in 39.0…

A:

Q: Describe how you would prepare 2.00 L of 0.150 M per-chloric acid from a concentrated solution that…

A: GivenSpecific gravity of HClO4 = 1.66 g/mLMass percentage of HClO4 = 70% (w/w) = 70g/100gMolar Mass…

Q: How many mL of 0.100 M hydrochloric acid react with excess zinc metal in order to collect 50.0 mL of…

A: All the necessary calculations have been done in the following step.

Q: What is the Molecular weight of a gas which diffuses 6/50 as fast as oxygen gas?   Show complete…

A: Given: Diffusion of the gas=6/50 of Oxygen gas

Q: 5) What mass of lead(II) bromide, PbBr2, (rounded to 100th of a gram) çan be dissolved to create a…

A:

Q: If 120 ml of 2% (w/v) is diluted with water qs 0.48 l what will be the strength of the dilution?

A: The strength of the solution is defined as the ratio of the mass of solute in grams to the volume of…

Q: Calculate volume of H2 at 0 degress C, 2.00atm, from 275mL of 0.725M HCl and 4.50g Mg.  Mg + 2HCl…

A: Given that : Reaction = Mg+ 2HCl → MgCl2+ H2 Pressure = 2.00 atm Volume of HCl =275mL Molarity of…

Q: Haw many ML 14.8 8M NHs Soution are Heedod 0-100 M NH3 to make l00 ML af

A: Given : Concentration of NH3 stock solution = 14.8 M Concentration of final NH3 solution to be made…

Q: concentration

A: