ou are working in the hospital specials unit as a rotational pharmacist. You need to make a sodium chloride 8% solution. You have both 20% and 4% solutions available. You need to combine both these solutions correctly to prepare this new 8% solution. How much will you need of the 4% solution to prepare 400ml of sodium chloride 8% solution.

Q: A student dissolves 20. g of aniline (CH,NH,) in 500. mL of a solvent with a density of 0.83 g/mL.…

A: Given :- mass of aniline = 20.g  Volume of solvent = 500.mL  Density of solvent = 0.83 g/mL  To…

Q: A student dissolves 17. g of methanol (CH3OH) in 500. mL of a solvent with a density of 1.11 g/mL.…

A:

Q: A chemistry student needs 30.00 g of 2-ethyltoluene for an experiment. She has available 0.50 kg of…

A: Given  Required data - mass of 2-ethyltoluene = 30.0 g   Available data -  mass of solution =…

Q: A chemist mixes 94.1 g of acetone with 58.0 g of thiophene and 82.4 g of methanol. Calculate the…

A: Interpretation-  To determine the percentage by mass for each component , component are given in the…

Q: A student wants 51.0 mL of a 1.50% saltwater solution. They only have a 5.00% stock solution. How…

A: The student require 51.0 ml of solution with concentration 1.5%. The concentration of stock is 5%…

Q: In the lab, Stock bottles of concentrated solutions can be diluted to make solutions for use with a…

A: Given: Molarity of initial solution = 12 M Molarity of final solution = 3 M Volume of final solution…

Q: A student dissolves 7.9 g of styrene (CHg) i in 325. mL of a solvent with a density of 0.84 g/mL.…

A: We have been given volume of solvent = 325mL, density of solvent= 0.84g/mL and mass of styrene =…

Q: Percent by Mass mass of solute_ × 100 mass of solution Percent by mass equals the mass of the solute…

A: Given : Mass of solute i.e DTN = 25 mg And mass of solution = 1000.0 mg

Q: In the lab, you are tasked with creating 500mL of 0.500M HCl solution (hydrochloric acid). In the…

A: We have to make 500mL of 0.500M HCl solution (hydrochloric acid) from 6M HCl

Q: A student dissolves 15. g of phenol (CH5OH)i in 300. mL of a solvent with a density of 0.81 g/mL.…

A: Given,mass of phenol ( C6H5OH ) = 15. gvolume of solvent = 300. mLdensity of solvent = 0.81 g/mL

Q: If a saturated solution of NH4NO3 at 70 °C is cooled to 10 °C, how many grams of solute will…

A: This question is based on solubility of a substance at different temperature.

Q: 7. Graduated cylinders can be used if an experiment calls for specific volumes but without the level…

A: All graduated glassware can be read with one uncertain digit, i.e. the uncertainty if +/- 0.1 is the…

Q: A chemist has three different acid solutions. The first acid solution contains 25%25% acid, the…

A:

Q: Calculations: Determine the molarities of Solutions 1, 2, 3 and 4. Apply the rules of significant…

A: Solution: By defination, molarity is nothing but the ratio of moles of solute in given liter of the…

Q: An aqueous solution of nickel(II) fluoride, NiF2 , contains 3.42 grams of nickel(II) fluoride and…

A: Given,  Mass of NiF2 = 3.42 g  Mass of water = 17.2 g  What is the weight/weight percent of NiF2 in…

Q: - * First, a stock solution of 10 mM fluorescein must be made in 15 mL of water. Calculate the mass…

A: Concentration of stock solution = 10 mMVolume of fluorescein solution = 15 ml = 0.015 LMoles of…

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A:

Q: A saline solution with a mass of 5.00 × 102 g has 17.2 g of NaCl dissolved in it. What is the…

A: Given Mass of solution = 5.00 × 102 g  Mass of NaCl = 17.2 g

Q: A chemist mixes 28.4 g of acetone with 60.1 g of 4-methyl-2-pentanone and 4.31 g of methanol.…

A: Percent by mass is defined as the mass of the substance divided by the total mass of the mixture…

Q: A chemist mixes 8.0 g of carbon tetrachloride with 25. g of thiophene and 85. g of…

A: Mass of carbon tetrachloride  = 8 gMass of thiophene                  = 25 gMass of…

Q: Table 1. Standardization of HCI Solutions (40 pts) Trial Volume of HCI (To the nearest 0.01 mL)…

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Q: Using this percent change data, determine the concentration of sucrose that would be isotonic.  it…

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Q: A certain liquid X has a normal freezing point of 7.10°C and a freezing point depression constant…

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Q: You have available a stock solution of 1.500M CuSO4. You need to prepare 500.0mL of 0.3000M CuSO4…

A: The solution is given below -

Q: 7. During week l's lab we investigated the effect of different soaking solutions on the behavior of…

A: Calculation is given below for complete the table.

Q: Chlorine bleach is a solution containing sodium hypochlorite and water.  The typical bottle of…

A: Given that  mass of sodium hypochlorite = 3.25 g concentration mass by volume = 5.5 %

Q: A diluted solution of sulfuric acis , H2SO4, has a density of 1.523 g/mL. The solution contains 50.0…

A: We will first calculate the number of moles of solute, then volume of solution. Finally find…

Q: A student must prepare 7.00 L of 0.100 M Na2CO3 (106 g/mol). Which is the best procedure for…

A: Given that: 7 L of 0.1 M Na2CO3.  Now, 7 L of 0.1 M Na2CO3 =  7 L x 0.1 mol/L…

Q: Calculate the volume of stock glucose solutions (2.5 % and 15%) that need to be used to prepare 800…

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Q: A chemist mixes 45.7 g of carbon tetrachloride with 98.4 g of 2-ethyltoluene and 31.1 g of…

A:

Q: A student dissolves 8.0 g of phenol (CH₂OH) in 125. mL of a solvent with a density of 1.06 g/mL. The…

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Q: Prepare 50 mL of an aqueous solution of 2.5% (w/v) NaCl (sodium  chloride, salt).Determine how many…

A: We know the concentration term w/v is %wv=mass of solute in gramsvolume in mL×100% so using this we…

Q: You are a chemist and FBI crime scene investigator and find a sealed bag containing a suspicious…

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Q: A student dissolves 5.2g of ammonia NH3 in 450.mL of a solvent with a density of 1.05 g/mL. The…

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Q: Solution 1 is diluted by adding 519 microliters of Solution 1 to 5 mL of Solution 2. What is the…

A: The solution 1 is diluted by adding solution 1 to solution 2. Volume of solution 1 = Volume of…

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.