A 1.6 g sample of a compound is transfered to a 100 mL volumetric flask, filled to the mark with distilled water, and thoroughly mixed.  Twenty five milliters of this solution is drawn from the flask using a volumetric pipet, transfered to another 100 mL volumetric flask, and filled to the mark and mixed.  The grams of compound in the second volumetric flask is: A.  1.6 B.  1.2 C.  0.80 D.  0.40

Q: 6.7 mL of a potassium chloride solution was added to a 54.730 g evaporating dish. The combination…

A: a) mass of dish = 54.730 g mass after evoparation = 55.428 g then, mass of KCl = Mass of dish+KCl -…

Q: The body mass index (BMI) estimates the amount of fat in a person's body. It is defined as the…

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

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

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Q: Analysis of Fat in Potato Chips Video Experiment: A sample of potato chips weighing 6.18 g was…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: Bayer Extra Strength aspirin tablets each contain 500 milligrams of acetylsalicylic acid. How many…

A:

Q: Which of the following is not a laboratory safety rule? O a. You should tie back your long hair O b.…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: . A 100 mg vitamin C tablet weighted 0.645 g. A student crushed the tablet and transferred 0.119 g…

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Q: 4. Nitric acid is a corrosive and strong acid. It has a molarity of 15 M when purchased from a…

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Q: The student dissolved 1.056 g of the given powder mixture (barium chloride + magnesium chloride) in…

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Q: A formula for a cough syrup contains 1/8 gr of codeine phosphate per teaspoonful. How many grams of…

A: A cough syrup contains  codeine phosphate per teaspoonful = 1/8gr 1 pint = 96 teaspoonful

Q: Write the equations for the formation of (a) lead (IV) carbonate, (b) sulfur tetrafluoride and (c)…

A: Answer: Chemical equation of formation are the ones in which 1 mole compound forms from the standard…

Q: A mass of KHP is measured at 0.3051g and contains ______ moles. Group of answer choices

A: KHP means potassium hydrogen phthalate. The molecular formula of KHP is C8H5KO4.

Q: According to the literature, when the product AMEVIVE (alefacept) is reconsti- tuted with sterile…

A: Given that 0.5 ml injection contains 7.5 mg Alefacept  We need 6ml injection So, 6ml contains…

Q: A student needs about 200 mL of a 0.8 M MgSO4 solution to run a reaction in lab, and must make this…

A: Given that 200 mL of a 0.8 M MgSO4 solution.

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Q: Not drying the crucible after washing is a bad mistake. For Part B: If the empty crucible is not…

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Q: 11. Four biochemical engineers were each given a chlorine-containing hydrocarbon to analyze and…

A: Since you have asked multiple questions with multiple subparts, we will solve first question with…

Q: If ammonia is dissolved in water and the total weights are 80 g at 19%, what are the weights of…

A: The mass of the solution is = 80 g The percent concentration of the solution is = 19 % The weight of…

Q: Calculate Kc for the reaction 2CCl4(g) + O2(g)    2COCl2(g) + 2Cl2(g).

A: CCl4(g) + 1/2O2(g)  ----> COCl2(g) + Cl2(g) Kc = [COCl2].[Cl2]/[CCl4].[O2]1/2  Kc= 4.4 x 109

Q: A chemist adds 390.0 mL of a 0.073M barium chloride (BaCl,) solution to a reaction flask. Calculate…

A:

Q: The American Heart Association (Links to an external site.) recommends no more than 2,300 milligrams…

A: 1 tsp of salt contains = 2300 mg of Na Conversion of mg into g: 1 mg=10-3 g1500 mg=1500×10-3 g=1.5 g

Q: How many grams of NaCl are required to make 350.0 mL of a 1.310 M solution? Your Answer: Answer…

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Q: The student dissolved 1.056 g of the given powder mixture (barium chloride + magnesium chloride) in…

A:

Q: I need help with d. E. F.  G.

A: Multiple sub-parts: Since you have posted a question with multiple sub-parts, we will solve first…

Q: A medical solution had a concentration of 30mg/ml. How many ml would need to be delivered to…

A: According to the given question - 30 mg/mL medical solution means 30 mg of medicine present in 1 mL…

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: A sunscreen preparation contains 2.50% by mass benzyl salicyla salicylate/100g sunscreen). If a tube…

A: Given : 1 tube contains 4 ounce of sunscreen  And we want to make 325 tubes Hence total mass of…

Q: A salt solution was evaporated on a hot plate. The dish holding the solution had a mass of 238.7564…

A: Given,  Mass of the dish=238.7564g Mass of the dish ( with dried salt) =241.5823g

Q: A student determines the calcium content of a solution by first precipitating it as calcium…

A: Given data,Molarity of Ca(NO3)2=0.531MVolume of Ca(NO3)2=34.0mL=0.034L

Q: Part A Devermine the amount of potassium chloride in each solution. 21.7 g of a solution containing…

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Q: PERCENT WATER IN A HYDRATE DATA/CALCULATION SHEET NAME 1. crucible, cover, BaCl2 2H2O \8,ao6!…

A: Mass of crucible and cover 14.0188 g Mass of crucible, cover and BaCl2.2H2O 18.2061 g Mass of…

Q: Assume that the 5.19 g of benzoic acid dissolves in hot water. 7.74 g of benzoic acid are added to…

A: Solubility of the benzoic acid in water increases as we increase the temperature Assume that only…

Q: Can an aqueous solution be prepared that is 30% by mass KNO3 at 20 degrees C? (Hint: use the data…

A: Given that the solubility of KNO3 at 20 oC is 31.6 g KNO3/100 g H2O.

Q: What mass of NaNO3 (in g) is needed? Express your answer using two significant figures. ΑΣΦ m Submit…

A: The question is based on the concept of solutions.   molarity is a method of expressing…

Q: 2. In your experiment today will the percent yeild of calcium carbonate be higher, lower, or…

A: The question is based on the concept of experimental Chemistry. we have to explain the effect of…

Q: Naporsyn 0.375 gm is ordered for a paitent. Naprosyn is supplied in 250 mg scored tablets. How many…

A: According to the question,  Amount of naporsyn ordered for patient = 0.375 g = 375 mg.  Dosage of…

Q: A stock solution of Na2B having a concentration of 0.1486 M is used to prepare four calibration…

A: Given,  Concentration of stock solution Na2B = 0.1486 M Solution is diluted to a total volume of =…

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.

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Q: Which of the following glassware is best used for slow dispensing of 47.00 ml of a solution? (A…

A: Solution is made up of solute and solvent.Solute is present in small amount and solvent is present…

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: When Alka-Seltzer® tablets are dissolved in water, a gas is produced due to the reaction between…

A: The given reaction on dissolving the tablet is,      3 NaHCO3 (aq) + C6H8O7 (aq) -----> 3 CO2 (g)…

Q: Convert and watch for sig figs! Answer in scientific notation. 134.7 kJ is kcal

A: Given units are KJ and Kcal and they are units of energy.  For converting KJ to Kcal…

Q: If the crucible originally weighs 3.715 g and 2.000 g of hydrate are added to it, what is the weight…

A: Given:Mass of crucible =  3.715 gMass of hydrate = 2.000 gMass of crucible and anhydrous salt =…

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 chemist adds 350.0 mL of a 0.039 umol/L barium chloride (BaCl,) solution to a reaction flask.…

A: Volume of BaCl2 added, V = 350 mL = 0.350 L Molarity of BaCl2 , C = 0.039 umol/L = 0.039 × 10-6…

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…

Q: 12. A sunscreen preparation contains 2.50% by mass benzyl salicylate (2.50g benzyl salicylate/100g…

A: Given,2.50% by mass of benzyl salicylate.1 tube = 4.00 ounces of sunscreen.

Q: The anaesthetic procaine hydrochloride is often used to deaden pain during dental surgery. The…

A: mass % is one of the ways to express the concentration of the solution.