1-3: A stock solution of 70% v/v ethanol was diluted with distilled water to prepare 1L of 21% v/v ethanol. (Density of ethanol = 0.789 g/mL; MW of ethanol = 46 g/mol) Determine the initial volume of 70% v/v ethanol used in the preparation.   How much water was added to the stock solution to make 1L of the final concentration?   The molarity of 5.0 mL of 70% v/v ethanol was found to be __________.

Q: Lead azide, Pb3(N3)3 has been used as a detonator in automobile airbags. A saturated solution of…

A: Since you have posted multiple questions, we will provide the solution only for the first question…

Q: ㅁ Question 9 1.5 pts A researcher wants to determine the concentration of beta-carotene in carrots.…

A: If we calculate all the Molarity of solution using M1V1=M2V2, then this will be the chart and the…

Q: CHEMISTRY (Please write the complete solution legibly. No long explanation needed. Answer in 2…

A: A) 350 mL 1.0 M H2SO4     150 mL 6.0 M H2SO4   To prepare 500 mL of 2.5 M H2SO4, we need a total of…

Q: 46.0 mL of water was added to 100.0 mL of 0.250 M CaCl₂ solution. Assuming the volumes are additive,…

A:

Q: Molarity Calculations. Report answers with correct units and number of sig figs please. 1. How many…

A:

Q: 1- The density of 60.0% (by mass) of an aqueous solution of propanol, C3H7OH(aq), is 0.8824 g/mL  at…

A: Given data,Concentration of propanol=60% by massDensity of solution=0.8824g/mLMolar mass of…

Q: In the lab, you used 2.0 mM FD&C Red Dye No. 40 solution. How much solid dye, molar mass 496.42…

A: Given, molar mass of solid dye = 496.42 gmol volume of red-dye-40 = 1.8 L concentration of…

Q: 6. A glass of salt water (NaCl + H₂O) has a density of 1.11 g mL-¹ and a molarity of 0.280 M. What…

A:

Q: A 99.8 mL sample of a solution that is 12.0% Kl by mass (d = 1.093 g/mL) is added to 96.7 mL of…

A:

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: You dissolve 6.31 g of potassium formate in 250 mL of 0.25 M formic acid (HCOOH). This solution was…

A: Given,  Mass of KHCO2 = 6.31 g  Molar mass of KHCO2 = 84.12 g/mol  Molarity of HCOOH = 0.25 M…

Q: A 6.0 mL sample of a 52.5 % (m/v) acetic acid (HC2H3O2) solution is added to water to give a final…

A: Initial volume = 6mL  Mass by volume % = 52.5 %  Final volume = 47mL

Q: 2 You will need 25.0 mL of 0.5 M solutions of each reagent. To do this: Calculate the mass of sodium…

A: Molarity of Na2CO3=0.5M Volume of the solution =25.0 mL = 25.0mL1000mL×1L=0.025L

Q: Casey needs to prepare 100.0 mL of a 0.50 M NaOH solution from a 2.0 M NaOH solution. How should…

A: The given problem relates to stock dilution, so we can use the below relation to calculate the…

Q: An effective germicide used in laboratories is a 70.0% v/v ethanol solution. This (v/v) means the…

A: We have to use unitary method for this.

Q: 1. Calculate the number of grams of copper(II) sulfate pentahydrate, CuSO, 5H,0, required to prepare…

A:

Q: 1.00 L aqueous solution that contains 5.00 g MgCl2 was diluted to 2.00L. a. what is the…

A:

Q: %3D What mass of NaHCO3 is needed to make 20.0 mL of a 1.00 M solution? Molarity (M) = moles/ Liter…

A: Given: The volume of the NaHCO3 solution = 20.0 mL The molarity of the solution = 1.0 M We have to…

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…

Q: Convert the experimental glucose concentration (provided in the table below) from mM (millimolar) to…

A:

Q: A brine solution is 10.0 % NaCl by mass. What is the molarity of this aqueous solution, given that…

A: Given a brine solution with concentration 10% by mass. Given density of the solution is 1.071 g/ml.…

Q: Calculate the molarity of each solutio. Express your answer using three significant figures.

A: Step : 1               Calculate the molarity of each solution.

Q: mol M = L ow many ml of water are needed to make a 0.150 M solution that contains 0.50 g of NaCl?…

A: Solution-1st we calculate No of moles NaCl-No of moles = given mass of NaClMolar mass of NaClNo of…

Q: Standard vinegar solutions are about 5% acetic acid by mass. What is the molarity of a 5% vinegar…

A: Vinegar is aqueous solution which contains small amount of acetic acid. Generally vinegar is used as…

Q: 1 The solubility of phthalic acid in water varies greatly with temperature. At 14°C, the solubility…

A: We have find out the answer.

Q: 1 How many moles of solute are present in 35.0 M KNO3? 1.2 What is the concentration in percent by…

A: Since you have posted a question with multiple subparts, we will solve the first three subparts for…

Q: 5. A mystery liquid with a density of 1.22 g/mL has a boiling point of 132.5 °C. (a) A sample of…

A:

Q: A chemist must dilute 94.7 mL of 2.74 M aqueous barium acetate (Ba (C2H3O2)2) by adding distilled…

A: M1V1  = M2V2 M1  -  Initial molarityV1 - Initial volumeM2 - Final molarityV2 - Final volume

Q: 1) A strong electrolyte will have only cations and anions dissolved in solution. (True or False) 2)…

A: Hi, since there are multiple questions posted we will provide you with answers for the first three…

Q: What is the molarity of a solution in which 50 g of NaOH (molar mass 40.00 g/mol) is dissolved in…

A:

Q: 50.0 mL of a 0.60 M solution of pyridine in ethanol is to be prepared by measuring out a known…

A:

Q: A sample of seawater from a tidal estuary was found to contain a concentration of 741 mg of chloride…

A:

Q: 2. A solution of ethanol (d = 0.795 g/mL) and water (H,O) is prepared by placing 30.0 mL of ethanol…

A: 2a. Data given, Density of ethanol = 0.795 g/mL  Volume of ethanol = 30.0 mL  V = volume of the…

Q: You wish to prepare 250.0 mL of a 425.0 ppm w/v sodium (MW= 22.9897 g/mol) solution. How many grams…

A: Given:Volume of solution = 250 mLw/v concentration of Na = 425.0 ppmMolar mass of Na = 22.9897…

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: Molarity! A solution is prepared by dissolving 20.0 g of Chloroform (CHCl3) in 60.0 gram of benzene…

A:

Q: 1. An oleic acid, C17H33COOH (282 g/mol), solution is added to water in a watchglass until a…

A: To find out the experimental value of Avogadro's number Given that the  Molar mass of Oleic acid =…

Q: A 0.678-g sodium carbonate sample with 98.6% purity requires 36.8 mL of sulfuric acid solution to…

A: We can determine molarity by using Molarity =  mole of solute/ volume of solvent (in the litter)

Q: A student placed 16.0 g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve…

A: Given: Mass of glucose in the initial solution = 16.0 g. Volume of initial solution = 100 mL = 0.100…

Q: In Part C of the experiment, you added a 6.0 NaOH solution to the aqueous solution of NaCl. Did the…

A: When NaCl is dissolved in water , it undergoes dissociation to form sodium and chloride ions.…

Q: 1. Which solution-0.50 M NaCl or 0.25 M SrCl₂-has the larger concentration when expressed in mg/mL?…

A:

Q: What volume of a 2.00 M KCl solution is required to prepare 500 mL of a 0.100 M KCl solution? Group…

A: Given :  Molarity of KCl solution = 2.00 M = M1 Preparation of new solution: Volume to be prepared =…

Q: Sodium lactate, NaC3H5O3, has uses in medicine to treat low blood pH and in soaps to create moisture…

A: Given, mass of sodium lactate = 9.01 g Volume of the solution = 0.250 L Concentration of sodium…

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.