1. You have a stock solution of 14.2 M NH3. How many milliliters of this solution should you dilute to make 1000 mL of 0.210 M NH3?         Express your answer using three significant figures.   2. If you take a 15.0-mL portion of the stock solution and dilute it to a total volume of 0.700 L, what will be the concentration of the final solution?        Express your answer using three significant figures.

Q: You have just added 100 uL serum to a tube that contains 0.9 mL of water. What is the correct…

A: Dilution factor is defined as the ratio of volume of solution after dilution to the volume of…

Q: A chemist prepares a solution of copper(II) sulfate CuSO4  by measuring out  64.8g  of copper(II)…

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Q: A chemist prepares a solution of copper(II) sulfate CuSO4 by measuring out 7.84g of copper(II)…

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Q: How many grams of sucrose are needed to make 815 mL815 mL of a 36.0% (w/v)36.0% (w/v) sucrose…

A: Given data: 815 mL of a 36.0% (w/v) sucrose solution   w/v % represents the weight or grams of…

Q: I have 571 mL of a 4.1 M NaCl solution. If I boil the water until the volume of the solution is…

A:

Q: A chemistry student must write down in her lab notebook the concentration of a solution of sodium…

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Q: Mass of Erlenmeyer flask: 25.52 g Mass of Erlenmeyer Flask + Calcium Hydroxide Solution (lime…

A: Mass of Ca(OH) 2 = 2.92 g Density of Ca(OH) 2= 1 g/ml As we know        Density = mass/ volume We…

Q: Please answer it this is a question from the topic of chemistry "Solution"   A water solution…

A: Density of the solution tells about the quantity of the substance present per unit volume of the…

Q: In the laboratory, a student dilutes 26.7 mL of a 7.32 M hydrochloric acid solution to a total…

A: Initial Molarity, M1 = 7.32 M Initial volume, V1 = 26.7 mL Final Molarity, M2 = unknown Final…

Q: AGNO,(aq) + NaCI(aq) NANO,(aq) + AGCI(s) Volume of unknown Volume of 1 M NaCI Mass of AgCl (g)…

A: Welcome to bartleby ! Introduction :  We have to calculate concentration of AgNO3

Q: In the laboratory, a student dilutes 17.9 mL of a 8.42 M hydrochloric acid solution to a total…

A:

Q: In the laboratory you dissolve 12.2 g of magnesium iodide in a volumetric flask and add water to a…

A: Mass of magensim iodide = 12.2g Molar mass =278.114g/mol Moles of Magnesium iodide…

Q: How many grams of NaOH would you need to make 3,243 mL of a 7 M NaOH solution (m.w. = 40.00 g/mol)?…

A: Given, volume = 3243 ml = 3.243 L Molarity = 7 M  Molar mass of NaOH = 40.00 g/mol

Q: n the laboratory, a student dilutes 19.3 mL of a 9.21 M hydrobromic acid solution to a total volume…

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Q: A sample of pure acetyl salicylic acid had a mass of 0.268 grams. It was dissolved in NaOH and…

A: Concentration of aspirin is expressed in term of molarity. Molarity is the number of moles of solute…

Q: A chemistry student must write down in her lab notebook the concentration of a solution of sodium…

A: Concentration: In chemistry strength of a particular solution can be measured by the following…

Q: We have an HCl solution with a density of 1.1691 g/mL (34% in weight) which we may use to neutralize…

A: The amount of moles in the solution always remains constant. there is no effect if we change the…

Q: Five different solutions were prepared in the laboratory. One was prepared by dissolving 7.1 g…

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Q: If 25.0 mL of a 3.00 M HCl stock solution are diluted with water to a final volume of 5.00 L, what…

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Q: A 2.80 M aqueous solution of LiCI has a density of 1.0626 g/mL. If the total mass of the solution is…

A: Molarity (M) :-  The number of moles of solute dissolved in one litre of solution is defined as…

Q: A)  Calculate the molarity 12.21 mg KI in 107.6 mL of solution         Express your answer using…

A: Molarity of a solution is defined as the number of moles of solute to the total volume of solution.

Q: A 10.00 mL sample of a test solution is diluted in an environmental laboratory to a final volume of…

A: The volume of the sample= 10.00 mL The concentration of the sample= c g/L The volume of the diluted…

Q: 1)A 191 −mL sample of a 1.4 MM sucrose solution is diluted to 450 mL. What is the molarity of the…

A: Since you have posted a question with multiple questions, we will solve first question for you. To…

Q: An analytical chemist weighs out 0.131 g of an unknown monoprotic acid into a 250 mL volumetric…

A: Given: Weight of monoprotic acid is 0.131 g. Volume of acid is 250 mL. Molarity of NaOH is 0.1800 M.…

Q: To prepare the 5% calcium chloride solution called for in Question 1b, how many moles of calcium…

A: Mass of calcium chloride present in 100 g of solution = 5 g The number of moles of calcium chloride…

Q: This lab used 6 M HCl that was diluted from a higher concentration.  If your lab instructor asked…

A: • Concentration (C) = No. of molesVolume• No. of moles = Concentration (C) x Volume (V)# If dilution…

Q: solution was standardized using 0.256 g of sodium carbonate. (Na2CO3 = 106 g/mol; HCl = 36.46 g/mol)…

A: Given,  Mass of Na2CO3 = 0.256 g Na2CO3 = 106 g/mol; HCl = 36.46 g/mol) Moles of Na2CO3 = mass/Molar…

Q: 'm trying to calculate the amount of sucrose in Cola. volume=50mL mass = 54.2060 g Density=…

A: Number of moles of sucrose is equal to the mass of sucrose divided by molar mass of sucrose.

Q: The concentration of chloride ions in a sample solution is 98 ppb. What is the mass in mg of…

A:

Q: 2.135 g of potassium chloride in enough water to make 100.00 mL solution. Th student then pipettes…

A: Molarity = number of moles of solute / volume of solution (in L)  M1V1=M2V2 M1= initial Molar…

Q: 7. A 525.0 mL sample of 5.50 M sulfuric acid has a density of 1.49 g/mL. Express the concentration…

A: Mass percentage = 36.20 %

Q: An analytical chemist weighs out 0.115 g of an unknown monoprotic acid into a 250 mL volumetric…

A: Given; The volume of the NaOH solution=8.5 mL = 0.0085 L. The molarity of NaOH = 0.1500 M. The given…

Q: What is the concentration of sodium chloride in the final solution if 18.50 mL of 0.125 M BaCl2…

A: From the moles of sodium chloride we can calculate the concentration of sodium chloride.

Q: A chemistry student must write down in her lab notebook the concentration of a solution of sodium…

A: Answer

Q: What laboratory equipment do you need to prepare 250 mL of a 0.010 M solution of NaCl from a stock…

A: The molarity of a solution is used to define the concentration of solute in that solution. The…

Q: The molecular weight of vincristine, a pharmaceutical drug, is 923.04 g/mol. It is supplied in a 1…

A: Volume of culture cells = 12 mL Final concentration of vincristine = 7 nM Volume of Vincristine to…

Q: When answering this problem, report the answer with the appropriate number of significant figures.…

A: Since the moles of copper(II) sulfate is coming from the copper(II) sulfate stock solution only…

Q: What is the concentration of a NaCl solution made from taking 22.64 mL of a 12.67M NaCl solution and…

A: Given information: Initial volume (V1) = 22.64 mL Final volume (V2) = 1.25 L Initial concentration…

Q: In the lab, 6.07 mL of a 15.8 M HNO3 (63.01 g/mol) solution is diluted to 250.0 mL. What is the…

A: Simply use , M1V1= M2V2

Q: An analytical chemist weighs out 0.091 g of an unknown triprotic acid into a 250 mL volumetric flask…

A: During a Titration, at equivalence point , the substance reacts completely with the added substance.…

Q: Vinegar Solutions Distilled white vinegar purchased in supermarkets generally has a 5% acidity level…

A: 8 % vinegar solution is being prepared by 5% and 12 % vinegar solutions. Let y ounces of the 12 %…

Q: 1. A 4.24 g sample of a laboratory solution contains 1.42 g of acid. What is the concentration of…

A: (1) Given that - Mass of sample Solution = 4.24 g  Mass of the acid = 1.42 g    Then, mass…

Q: A 15% wt/wt AgNO3 solution has a density of 1.141 g/mL, what is its concentration in terms of M?…

A:

Q: In the laboratory you dissolve 15.8 g of nickel(II) bromide in a volumetric flask and add water to a…

A: Answer:- This question is answered by using the simple concept of calculation of molarity of the…

Q: What mass of potassium permanganate would be required to make 500.0 mL of solution with a…

A: When two compounds are mixed together and they form a solution. The compound which is present in…

Q: 7B.

A: Since mass of solute is constant and we are adding water only. Hence the final concentration =…

Q: An analytical chemist weighs out 0.279 g of an unknown diprotic acid into a 250 mL volumetric flask…

A: The given data contains, mass = 0.279 g. Volume = 250 ml. Molarity of NaOH=0.1400 M. Volume of NaOH…

Q: 1.872 g C4H4O4 is dissolved in H20 and titrated with NaOH. 12.3 mL of a NaOH solution were required…

A: Applying formula  Molarity = no. of moles of solute /vol of sol(Lt)  No. Of moles of C4H4O4 =…

Q: A sample of pure acetyl salicylic acid had a mass of 0.268 grams. It was dissolved in NaOH and…

A: Given Mass of aspirin = 0.268 g Molar mass of aspirin = 180.2 g/mol Volume of solution = 500.00 ml =…

Q: a. A 250.0-mL solution of sodium hydroxide was prepared by dissolving pure NaOH(s) in deionized…

A: We will calculate mass and concentration using law of chemical equivalence.