Q: 1. How many moles of KNO3 are needed to make 450 ml of 1.5 molar solution?
A: Given- Volume = 450 ml = 0.450 L (1L = 1000ml) Molarity = 1.5 M
Q: How many liters of a 3.55 MM KClKCl solution are needed to provide 45.8 gg of KClKCl?
A: Since, Molarity is the number of moles of solute dissolve in one litre of the solution. Thus,
Q: A Pb contaminated water sample contains 0.0013 % Pb by mass. How much of the water (in mL) contains…
A: The mass percent refer the mass of solution in 100gm of solution Use this is a conversion factor to…
Q: A solution is made up of 20.0 mL of ethyl alcohol and 50.0 mL of water. What is the volume percent…
A: Volume percent or percentage by volume v/v is one of the concentration terms that indicates the…
Q: How many grams of sodium chloride are required to make 2.34 L of 2.43 M sodium chloride solution?
A: Definition: Molarity is a concentration term for a solution. The molarity of a given solution is…
Q: How many grams of HCl are in 100.0 mL of 12.0 M HCl solution?
A: Given that, volume of HCl solution is 100 mL and molarity is 12.0M (i.e, 12 mol/L). The molarity is…
Q: How much 2.0 M NaCl solution would you need to make 250 ml of 0.15 M NaCl solution?
A: To relate the volume and molarity of a solution at two different concentrations, the expression used…
Q: How many moles of KBr are present in 150 mL of a 0.112 M solution?
A: Given:Molarity = 0.112 MVolume of KBr = 150 mL = 0.150 L
Q: What is the molarity of a solution containing 15 g sulphuric acid in 150 ml solution? What is the…
A: Molarity: the number of moles of a solute dissolved in one litre of the solution is called molarity.…
Q: A solution contains 25% by mass of HCl and a density of 1.08 g / ml. Which is the mass of water…
A: The concentration of the given HCl solution is given as - HCl = 25% (w/w) Density of the solution =…
Q: What volume of 0.5 M NaCl solution contains 212.9 grams of NaCl?
A: Molarity is the number of moles of solute dissolve in one litre of the soltion.
Q: How many grams of calcium chloride in 100.0 mL of 25% solution?
A: The volume of the solution is = 100.0 mL The concentration of calcium chloride is = 25 % The mass of…
Q: How many milligrams per liter are equivalent to a 1.2% solution of a substance in water?
A: The answer is given below-
Q: it is desired to prepare 0.500 L of a 0.192 M of solution of NaCl from 1.00 M stock solution. how…
A: Given, Initial Molarity M1 = 1.00 M V1 = ? V2 = 0.500 L M2= 0.192 M
Q: What is the concentration of a solution that contains six moles of solute in 2 L of solution?
A: Solution: Molarity(M) indicates the number of moles of solute per liter of solution(m/L) and is one…
Q: A bleaching solution requires 2.16 g of sodium hypochlorite. How many grams of a 21.5% by mass…
A: Given Mass of sodium hypochlorite (solute) = 2.16 g percentage by mass of solution = 21.5%
Q: How many moles of KOH are contained in 250 mL of 5.0 M KOH solution? 20.0 O 2.75 O 1.25 O 1250.0 O…
A: Volume of KOH solution = 250 mL = 0.250 L ( 1L=1000 mL ) Molarity = 5.0 M Molarity = Number of…
Q: hat volume of
A:
Q: How many grams of sodium chloride is needed to make 250 ml of a 125mM solution.
A: Concentration of the solution = 125 mM = 0.125 M = 0.125 mol/LVolume of the solution = 250 mL =…
Q: What volume of 1.2 N CaCO3 solution contains 236.8 grams of CaCO3
A: Normality is a unit of concentration and it is defined as the number of gram equivalents of solute…
Q: How much volume of 1.6 M NaOH solution can be made by diluting 74 ml of 4 M NaOH.
A:
Q: How many grams of Calcium Chloride in 100.0 mL of 1.8 Moles solution?
A: The volume of the solution is = 100.0 mL The molarity of the solution is = 1.8 M The mass of calcium…
Q: defined as the amount of solute present in a solution
A:
Q: How many moles of KOH are contained in 750. mL of 5.00 M KOH solution?
A: Given, Volume of KOH solution = 750 mL = 0.750 L (1 mL = 0.001 L) Molarity of KOH solution =…
Q: How many mL of a 5.02% copper(I) bromide solution contains 2.66 g copper(I) bromide? The density of…
A: Mass percent :- The mass of solute present in 100 grams of solution is known as its mass percent .…
Q: What volume of 2.0 M NaCl solution can be made from .75 moles of NaCl?
A: Here, we have to find the volume of 2.0 M NaCl solution that can be made from 0.75 moles of NaCl.
Q: Stock solution of HF is 49 % HF by mass and has a density of 1.17 g/mL. What is the concentration…
A: The mass percent concentration of HF solution is = 49 % The density of the solution is = 1.17 g/mL…
Q: How many grams of sodium nitrate are needed to prepare 1.85 liters of a 0.995 M sodium nitrate…
A: Moles of a particular compound can be determined by calculating the product of the molarity and the…
Q: How many grams of NaCl are there in a 50.0 g of 0.90 % sodium chloride solution?
A: 50.0 g of 0.90 % sodium chloride solution
Q: How many milliliters of water are present in 250.0 mL of a 15.0% by volume aqueous hydrochloric acid…
A: volume by volume percentage is a measure of the concentration of a substance in a solution. It is…
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- 17- The percentage of protein in meat products is determined by multiplying the %N as determined by the kjeldahl method by the arbitrary factor 6.25. A sample of processed meat scrap weighing 2.000 g is digested with concd H2SO4 and Hg (catalyst) until the N present has been converted to NH&HSO.. This is treated with excess NaOH, and the liberated NH3 is caught in 50.0 mL pipetful H2SO, (1.000 ml 0.01860g NazO). The excess acid requires 28.80 mL NaOH (1.000 mL = 0.1266 g KHP). Calculate % protein in the meat scrap.A salt solution (30% Na2CO3) weighing 1ton iscooled to 20C where the salt crystallizes asdecahydrate. What will be the crystal yield ifthe solubility is 21.5 kg anhydrous Na2CO3/100kg water? (assume that 3% of the totalsolution is lost by evaporation)Show all pertinent solutions. Compute to five (5) decimal places
- Gravimetric determination of Ksp. Table 1 Trial Volume of solution used (ml) Mass of empty beaker (g) Mass of beaker with solid residue (g) Mass Ca(OH)2 (g) Ksp for Ca(OH)₂= % error = 10mL 92.808g 92.766g 0.042g Determine the mass of dissolved solid that was in the saturated solution. Calculate the molar solubility of the solution (M) using the mass of dissolved solid, the volume of solution used in the analysis, and the molar mass of calcium hydroxide. Substitute the molar solubility into a version of equation 4.1 [Hint: use an ICE table] to determine the Kp. Provide an annotated calculation below: 1The standard addition method is used to analyze a sample of a river water for mercury. Solution A is made by pipetting 5.00 mL of undiluted sample in to a 10 mL volumetric flask and filling to the mark with D water. Solution B is made by pipetting 5.00 mL of undiluted sample and 3.00 mL of 15.0 ppb of Hg standard into same 10.0 mL volumetric flask and filling to the mark with DI. Solution A and B are analyzed using atomic absorption spectroscopy and give a percent transmittance values of 56 % and 33 % respectively (not blank corrected). A blank has a transmittance of 96%. Which of the following technique can be used to determine the amount of mercury in the undiluted sample of river water? O A. IR spectroscopy O B. Cold vapor atomic absorption OC. Hydride generation atomic absorption OD. Electrothermal atomic absorptionGive me handwritten answer?
- Jio 4G VOLTE 46l 1.01K/s m N 40% I 12:04 PM chemical calcul... NUMERICAL PROBLEMS 10g of sodium hydroxide was dissolved in water to give a solution. with a volume o exactly 0.2 dm3. What is the molarity of the solution? A solution contains 29.0g of trichloroacetic acid (ClgC COOH) (formula wt 163) ir 1dm3 of an aqueous solution. Assuming that the acid is 72% ionized. Calculate the formal and molar concentrations of the constituents. 1. (Ans. 1.25 M 2. (Ans. Formality = 0.178 F, molarity = 0.04984M Мн- МСHgCOо-- 0.12816 mol dm 3. 7.03g of a dibasic acid of molar mass 98 are dissolved in 0.8 lit. (0.8dm3) of the solution. Calculate the molarity and normality of the acid solution. (Ans. 0.1793 M, 0.08977 M) 39 Chmical Calculations 4. Calculate the equivalent weights of the following substances a) (HgCgO4, 2H2O) in its reaction with NaOH. b) (HgCgO4, 2HgO) in its reaction with KMNO4 c) KMNO4 (in acidic medium) d) AgNOs (in its reaction with NaCI) 5. Calculate the volume of 94% H2SO,…Answer items 1 and 2I have already done #2 and #3. I think you need that information to respond #4
- The Common App... An experiment was conducted using KNO3. The table below shows the data obtained after dissolving different masses of KNO3 in 10 ml of deionized water and then cooling to determine the temperature at which the different concentration of salts begin to recrystallize Concentration of KNO3 Saturation temperature(°C) 2g/10 ml 52.5 4g/10 ml 54.7 6g/10 ml 66.7 8g/10 ml 80.2 If a student dissolve 24g of KNO3 in 120 ml of deionized, at what temperature do you expect to see recrystallization O 52.5 degree celsius O 66.7 degree celsius 0:54.7degrce celsius O100.2 degree celsius20 aspirin tablets labeled 80mg were dissolved in 100mL of 90% ethanol. A 10mL aliquot was taken and was used for assay. The analyte followed usual process and was treated with 50mL of 0.1000N NaH and was titrated with 35mL 0.1050N H2O4 until the solution achieved completion. Calculate the % content of the total aspirin capsules and the actual label claimSuppose you have a soil that is made up of 10% organic matter with CEC = 200 cmol/kg, 40% kaolinitewith CEC = 10 cmol/kg, and 50% vermiculite with CEC = 100 cmol/kg.1- Calculate the overall CEC of the soil by taking a weighted average of the three soil components.2- What percentage of the overall CEC is contributed by the organic matter? How does that numbercompare to the 10% of the soil itself that is organic?