All the CaSO4 present in 0.511g of an impure sample of plaster is converted to 0.821g BaSO4. What is the % of CaSO4 in that sample?

Q: Calculate the mass percent of solute in each solution. Calculate the mass percent of 3.87 g KCl…

A: The mass percent of an element in a compound is the percentage ratio of the mass of the element by…

Q: The molar concentration of 290 ppm of Cs* (132.91 g/mol) in a solution that has a specific gravity…

A: Given;           Molar concentration =290 PPm           Molar mass of CS+ =132.91 g/mol…

Q: The mole-fraction of 5.85 g : NaCl in 90 g of H20 is Grtore acr

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Q: How many grams of Al2(C204)3 are needed to make 35.2 mL of a 14.3 %(m/v) solution?

A: Mass by volume percent is defined as mass of solute divided by volume of solution multiplied by 100.…

Q: The molar concentration of 290 ppm of Cs* (132.91 g/mol) in a solution that has a specific gravity…

A:

Q: What is the molar concentration of HNO3 (63.0 g/mol) in a solution that has a specific gravity of…

A: Given that, Molar mass of HNO3 = ( 63.0 g/mol) Specific gravity = 1.15  And 65% (%w/w) of HNO3…

Q: A solution is made using 92 g of A(MM = 92 g/mol) and 80.0 g of B (MM = 40 g/mol). What is the mole…

A: We know that the mole fraction of B comes out to be xb=na/na+nb

Q: How many liters of 44.6N of H3PO4 are needed to prepare 750 ml of 7.4M.

A: Given data is as follows: The normality of H3PO4 = 44.6 N The volume needed to prepare H3PO4 = 750…

Q: Calculate the mass percent of solute in each solution. Calculate the mass percent of 3.37 g KC13.37…

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Q: What volume of concentrated 15.75 mol/L nitric acid would a lab technician need to make 5.50 L of…

A: We know, volume multiplied by concentration gives the number of moles of that substance. Here, the…

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

A: Given: Concentration= 0.68 parts per billion Volume of water= 15.0 L Density= 0.998 g/ml

Q: What happens to lime water when Co2gas is bubbled through it in excess?

A: The lime water is a solution of calcium hydroxide, Ca(OH)2, and carbon dioxide undergo reaction to…

Q: Prepare 250 ml of 2.5% w/v NaCl

A: Solutions are prepared in various concentration. One of such concentration is weight by volume…

Q: combination

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Q: 1. Copper metal and aqueous iron (III) chloride were made to react to reduce iron to Fe** while…

A: Cu metal  +  Iron III chloride  →  Fe2+  +  Cu2+…

Q: From 0.8 av lb of 20% w/w KOH solution 142 86.2 121 72.6 g of 12 percent w/w KOH may be produced.

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Q: A chemical analysis shows that a sample contains 250.0 micrograms ofUranium in 4.00 x 10 4 grams of…

A: In the given problem the information provided is - A sample of observation contains grams of Uranium…

Q: Calculate the quantity of each ingredient needed to prepare 15 mL of the following ophthalmic…

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Q: Lahen 9 5o1d is Impure, Its muting Point is higher and broader Tran the muhng unt fur pure Sampleã.…

A: When a pure substance is added with an impurities than the Properties like Melting point, boiling…

Q: How many grams of Pb(NO3)2 (331.2 g/mol )are needed to prepare 200 ppm (w/v) of Pb*2 (207.2 g/mol)…

A:

Q: How many grams of Pb(NO3)2 (331.2 g/mol )are needed to prepare 100 ppm (w/v) of Pb* (207.2 g/mol) in…

A: The molar mass of Pb(NO3)2 is = 331.2 g.mol The molar mass of Pb is = 207.2 g/mol The concentration…

Q: If a small amount of impurity is present in a sample, what will be its effect on the melting point…

A: Types of impurities that can be present in the sample: Miscible impurity: Such impurity is soluble…

Q: The molar concentration of 290 ppm of Cs (132.91 g/mol) in a solution that has a specific gravity of…

A:

Q: A 0.250 M solution of Na2C204 is to be used in a reaction in which the C2042- will be oxidized to…

A: Molarity is the term which is used to express concentration of a solution. It is calculated by…

Q: The molar concentration of 290 ppm of Cs (132.91 g/mol) in a solution that has a specific gravity of…

A:

Q: 1) i) A liter of sulfuric acid solution containing 147.0 g of H2SO4 has a density of 1.29 g/cm.…

A:

Q: Calculate the normality of a 22.5mL sample of H2SO4 if the volume of 1.1055N NaOH used in the…

A: Given,  Volume of H2SO4 = 22.5 mL Molarity of NaOH = 1.1055 N Volume of NaOH = 20.70 mL

Q: Calculate equivalent weight for H3PO4.

A: The molecular weight of phosphoric acid is= (3+31+16*4)gram/mol = 98 gram/mol

Q: How many grams of Pb(NO3)2 (331.2 g/mol )are needed to prepare 100 ppm (w/v) of Pb*2 (207.2 g/mol)…

A: Given: The volume of the solution to be prepared = 100 ppm (w/v) The volume of the solution = 1 L We…

Q: O: 11:5%. Sucrose by massox MHD what Volume of soft,dmnk Solin Noitolumillimeter contain' 85:2g of…

A: The mass percent of the solution is = 11.5 % The mass of solute, sucrose is = 85.2 g The volume of…

Q: A laboratory technician purchased 250. mL of 15.4 mol/L nitric acid. She uses this concentrated…

A: Given that : Initial volume (V1) = 250 mL = 0.25 L Initial concentration (M1) = 15.4 mol/L Final…

Q: How many grams of hydrochloric acid are contained in 2.00 L of 0.500 N solution?

A: Given : Normality of hydrochloric acid i.e HCl = 0.500 N And volume of solution = 2.00 L

Q: 5µL of the 500mM Tris is then added to a tube labelled A containing 995µL of sterile water. 15µL of…

A: The Student prepared the sloution of 100 mL whose concentration is 555 mM. Then 5µL tris solution is…

Q: 6.30 L of 0.262 M NaOH from the concentrated commercial reagent [50% NaOH (w/w), sp gr 1.525]. Take…

A:

Q: What is the level of the liquid in the gatuted oede Volume mL. 70 60

A: Everything that has and occupies space is called matter. Solids, liquids, gases are the three states…

Q: A 6.21 g mixture of sucrose (C₆H₁₂O₆, 342.30 g mol⁻¹) and ethyl alcohol (C₂H₆O, 46.07 g mol⁻¹) is…

A: First we have to find moles of CO2(g) formed from the given data:  Volume, V = 5.12 L  Temperature,…

Q: 780 mL of 1.10% (w/v) aqueous BaCl2 from a 0.400 M BaCl2 solution. mL with water. Take mL of the…

A: Volume of 0.40 M BaCl2 solution to make 1.10% (w/v) 780 mL of BaCl2 solution = ?  Volume of…

Q: Molecular weight of disodium ethylenediaminetetraacetate is 292. The weight in grams is 4.803 to…

A: Given that -  Weight of disodium ethylene diamine Tetra Acetate = 4.808  Molar mass = 292  Molarity…

Q: what chemical equation produce when 5 mL of concentrated hydrochloric acid and 3 drops of 2%…

A: Normally Vanaspati is prepared from vegetable or seed oil by the hydrogenation process. It is…

Q: What is the H2S content of the solution (in mg/dm3 unit) of which 20 cm3 reacts with 40 mg of Br2.…

A: Given that ; Mass of Br2 = 40 mg = 0.04 g Volume of solution = 20 cm3 = 0.02 dm3 MM[H2S]=34.08 g/mol…

Q: At 23°C, 85.0 grams of NaNO3(s) are dissolved in 100. grams of H;O(1). 2. Based on Table G,…

A: Answer:- This question is answered by using the simple concept of solubility of salts in water at…

Q: A 38.0 µM sample solution occupies 3.03% of the length of a 59.6 cm long capillary that has a…

A: To calculate moles of solution , we would need to calculate volume of solution.  For this we would…

Q: Suppose that an experiment required that 250 ml of a 35 ppm aqueous dipotassium phosphate (K2HPO4)…

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Q: Determine the number of grams of H2SO4 that would be contained in 800.0 mLof a 1.5 M H2SO4 solution.…

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Q: What volume of a 0.7M solution can be prepared with 45g of copper(I) nitrate?

A: Mass of CuNO3 = 45.0 g  Molarity = 0.7 M  Volume of Solution = ?

Q: A solution contains 125 g of a compound and 555 g water.   The boiling point  of the pure solvent is…

A: Given :-  Mass of compound = 125 g   Mass of solvent = 555 g or 0.555 kg  boiling point  of the…

Q: A solution is formed by dissolving 40 g of KClO3 in to 100 g of water at 70 °C. Explain how much of…

A: Given,  A solution is formed by dissolving 40 g of KClO3 in to 100 g of water at 70 °C.  solubility…

Q: How many milliliters of a 1:50 (wv) stock solution should be used to make 3 liters of a 1:5000 (w/v)…

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Q: What are the steps in diluting high concentration of stock solutions into lower concentration…

A: During dilution, concentration changes but no of moles remain same. So, M1V1 = M2V2 Let-…