1. The following represent a portion of the smallest scale of a centigram balance. For an accurate reading, how should the scale value be recorded?a. 0.2 gb. 0.25 gc. 0.248 gd. 0.24 gExplain your answer.

Q: A chemist prepares a solution of silver nitrate (AGNO,) by measuring out 77. g of silver nitrate…

A:

Q: A 3.40 M aqueous solution of LiCI has a density of 1.0758 g/mL. If the total mass of the solution is…

A: given molarity = 3.40M mass of solution = 59 g density of solution = 1.0758 g/ml

Q: Q8 To what volume (in mL) should 6.27 mL of an 6.57 M acetic acid solution be diluted in order to…

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Q: A chemist makes 780. ml. of mercury(I) iodide (Hgl.) working solution by adding distilled water to…

A: We have 780 mL of working solution, stock solution as 230 mL 48.7 *10-6M. We have to calculate the…

Q: 1.1) What is a balance used for ? 1.2) What are the four major type of balances us sused ? 1.3) Why…

A: Hello. Multiple questions have been specified to be solved. The question specified first has been…

Q: How many kcal/mol are in 206.16 kJ/mol? Do not put units in your answer. Do use proper significant…

A: Kcal/mol to KJ/ mol  1kcal/mol= 4.184 kilojoules   In SI units one kilocalorie per mole is…

Q: A 0.660 ? aqueous solution of KBr has a total mass of 77.0 g. What masses of solute and solvent are…

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Q: In a laboratory experiment, a 19.0 −mL−mL sample of KClKCl solution is poured into an evaporating…

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Q: A chemist prepares a solution of aluminum sulfate (Al, (so,),) by measuring out 15. g of aluminum…

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Q: Q6) Given the following set of data concerning standardization of NaOH solution: - mass of KHP…

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Q: In the standardization of an acid and base solution, sodium hydroxide (99.5% by mass) was used. A…

A: Given: initial burette reading=5.5mL final burette reading=28mL Weight of the sample=0.12g To find:…

Q: Which  one  of  the  following  figures  best  represents  the  expected  result  when  three…

A: A multiple choice question based on the  relation between density of three immiscible liquids.

Q: You have a 0.561 M solution of magnesium chloride. You pour out 389.8 mL. of this solution. How many…

A: Given that:  Molarity of Magnesium chloride (MgCl2) = 0.561M  Volume of solution = 389.8ml =…

Q: An empty beaker is placed on a balance, and its mass is recorded at 42.513 g. The beaker is removed…

A: In this question, we want to determine the mass of the sodium chloride solution ( NaCl )  You can…

Q: If there is no specific indication we consider a percent solution to be a what percentage

A: Percentage solution It is defined as the number of parts of solute in 100 parts of solution. The…

Q: Classify & Balance: P (s) + 02 (g) --> P2O5 (s) * Your answer

A: Balancing equation as follows                      P + O2 ---------> P2O5

Q: volume of 34.2 mL of a 1.16 M KMnO4 solution is mixed with 16.7 mL of a 0.392 M KMnO4 solution.…

A: Given, Note: 1L = 1000 mL Solution I Concentration of KMnO4 solution I = 1.16 M = 1.16 mol/L Volume…

Q: Microbiologists use acid-alcohol when performing a cell stain of the pathogen Mycobacterium…

A: It is given that  3% (weight/volume)HCl is made in ethanol solution =3 gm per 100 ml solution…

Q: 10 11 12 13 14 A chemist prepares a solution of potassium iodide (KI) by measuring out 3.0 x 10"…

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Q: a) State two reasons why the front door of the balance is closed during weighing.

A: Since you have posted multiple questions, as per guidelines we will solve only the first one for…

Q: Allison dissolves as much as possible of a certain solid in a quantity of water at room temperature;…

A: Solubility is the mass of the solute dissolved in particular amount of solution .

Q: ow many grams of MgCly are needed to prepare 860 mL of 0.387 molar aqueous MgCl? Put answer in box…

A: Since MgCl does not exist , so it would be MgCl2 . Given : Volume of MgCl2 = 860 ml Molarity = 0.387…

Q: please highlight the correct answer

A: The volume of the solution that needs to be diluted is calculated below.

Q: Please use these numbers: (#1 Answer) Balance A: 15.746 Balance B: 15.75 Balance C: 15.7 (#2…

A: Relative uncertainties in density: Uncertainty in A = ±0.00115.746= ±6.35 ×10-5= ±0.00006…

Q: You have a 0.871 M solution of magnesium chloride. You pour out 336.5 mL of this solution. How many…

A: Given that: Molarity of Magnesium chloride= 0.871 M  Volume of Magnesium chloride= 336.5 ml…

Q: A beaker has a mass of 40.94 g. After 5.00 mL of the concentrated hydrochloric acid solution is…

A: The density of a substance is calculated by formula  Density =mass ÷volume  Given mass of beaker…

Q: Suppose you are measuring the mass of a solid sample on a balance using a weigh boat. You record the…

A: An instrument used to determine the weight of samples used in analysis is called a weigh balance.…

Q: A 10.0 mL sample of oil is transferred into a beaker with a mass of 43.559 g. The mass of

A: given  beaker mass =43.559 gr  sample of oil volume =10 ml beaker mass with oil=56.890 gr mass of…

Q: 1. What is the percent by mass of 6 g of copper (II) sulfate dissolved in 84 g of water? 2. A…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A chemist prepares a solution of sodium thiosulfate (Na, S,0,) by measuring out 1.2 g of sodium…

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

Q: In a student experiment, the empirical formula of a copper halide was found by adding aluminum metal…

A: Empirical formula is the simplest chemical formula that represents a compound. It is related to…

Q: A chemist must prepare 675. mL of 42.0 µM aqueous silver(II) oxide (AgO) working solution. He'll do…

A: The volume of solution to be made is 675 mL = 0.675 L                                  ( since 1 L =…

Q: (a) A student has a 10.0g sample of CaBr2. Show the setup of the calculation to determine the number…

A: The number of the moles of any substance present in a sample is the ratio of the given mass of that…

Q: Can you actually write this out? It makes it much more difficult to read when it gets written out…

A: The mass of solute in gram present in 100 g solution is known as the mass percent concentration of a…

Q: the sucrose concentration in the remaining 300 mL

A:

Q: Below is a picture of a 10-fold dilution series. What is the dilution factor of tube #3? Write as…

A: The dilution factor is referred as the final volume divided by the initial volume of the given…

Q: log1o time for ball to drop mL H2SO4 Moles H2SO4 Time for ball to added drop (sec) added 0.50 1.00…

A:

Q: You have a 0.249 M solution of magnesium chloride. You pour out 541.3 mL of this solution. How many…

A: Consider the given information is as follows; Concentration of magnesium chloride = 0.249 M = 0.249…

Q: You record the following data during the Qualitative and Quantitative Characterization of Aspirin…

A: A numerical problem based on amount of substance, which is to be accomplished.

Q: %3D .1 mL 441.)10 1 dt 10 I mL. %3D 441. 10 101 1°

A: So basically the question have asked to solve the unit conversation.

Q: Methyl salicylate (sp gr = 1.167) 60 mL Lidocaine 4% (w/w) Tween:Span mix (1:4 mix) Polypeg Base 10…

A: Since you have asked a question with multiple subparts, we will answer only 3 subparts for you.  In…

Q: umol A chemist must prepare 975. mL of 16.0 µM aqueous silver(II) oxide (AgO) working solution.…

A: Given : Final concentration of AgO = 16.0 µM Final volume of solution = 975 mL And Initial…

Q: A student submerges an 18.0 gram metal sample in water. The density of the metal is known to be 12.5…

A: The given data: The mass of the sample = 18.0 g The density of the metal = 12.5 g/mL The final…

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 preparation of soda ash is known to contain 98.6% Na2CO3 (105.99 g/mol).  If a 0.678-g sample…

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Q: You have just added 25 uL serum to a tube that contains 750 uL of water. What is the correct…

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Q: com/alekscgi/x/Isl.exe/1o_u-IgNslkr/J8P3JH-IBEWe Maps O MEASUREMENT Lindsay Adding or subtracting…

A: The question is based on the concept of solutions. we have to calculate concentration of sodium…

Q: he computed percent recovery was more than 100%. What does this signify, and what should be done…

A: The computed percentage yield to be over 100% indicates that there is more recovery of the sample…

Q: A 45% sucrose solution lost 240 mL by evaporation. After evaporation what is the sucrose…

A: The concentration of the sucrose solution is = 45 % The volume of the solution is = 240+300 = 540 mL…

Analytical Tools

Analytical tools or analysis tools help one to get into a conclusion or results from the data collected. Analytical tools can be applied for simple data sets and also in the case of big data analytics.