A student prepared a solution of oxalic acid by sufficiently dissolving a dark chocolate bar in...
A student prepared a solution of oxalic acid by sufficiently dissolving a dark chocolate bar in a 100-mL volumetric flask. In the experiment, 8.989-mL of 0.152 M NaOH was required to reach the equivalence point of a 10-mL aliquot of this oxalic acid solution. Assuming the average mass of a dark chocolate bar is 3.00-oz (and that oxalic acid is the only acid present in appreciable amounts), determine the % mass of Oxalic Acid in a normal dark chocolate bar.
Homework Answers
Request Answer!
We need at least 10 more requests to produce the answer.
0 / 10 have requested this problem solution
The more requests, the faster the answer.
Add Answer to:
A student prepared a solution of oxalic acid by sufficiently
dissolving a dark chocolate bar in...
A solution is prepared by dissolving 0.5892 g oxalic acid (H2C2O4) in enough water to make...
A solution is prepared by dissolving 0.5892 g oxalic acid (H2C2O4) in enough water to make 100.0 mL of solution. A 10.00-mL aliquot (portion) of this solution is then diluted to a final volume of 250.0 mL. What is the final molarity of the diluted oxalic acid solution? I do not know if the answer of 0.00187 or 1.87 x 10^ -3 is correct. It is incorrect in my perspective, so i do not expect that answer, if you think...
A standard iron solution was prepared by dissolving 0.0100 g of pure iron in acid then...
A standard iron solution was prepared by dissolving 0.0100 g of pure iron in acid then transferring to a 50.00 mL volumetric flask with orthophenanthroline as a complexing agent. At a wavelength of 540 nm, the absorbance of the standard was 0.239 in a 1.00 cm cuvette. A 0.149 g sample of an iron ore was crushed and digested in 5 mL of concentrated acid. The digested sample was then transferred to a 10.00 mL volumetric flask and diluted to...
3. a) A standard ZnCl2 solution is prepared by dissolving 0.6483 g of Zn in an...
3. a) A standard ZnCl2 solution is prepared by dissolving 0.6483 g of Zn in an HCl solution and diluting to volume in a 1.00 L volumetric flask. An EDTA solution is standardized by titrating a 15.00 mL aliquot of the ZnCl2 solution, which requires 16.12 mL of EDTA solution to reach the end point. Determine the concentration of the EDTA solution. (2 pts) b) A 1.5146 g sample of powdered milk is dissolved and the solution titrated with...
A stock solution was prepared by dissolving 0.593 g of pure ASA (molar mass = 180.2...
A stock solution was prepared by dissolving 0.593 g of pure ASA (molar mass = 180.2 g/mol) with NaOH solution and diluting with water in a 1000 mL volumetric flask. This was followed by pipetting 4.00 mL of the stock solution into flask A and 5.0 mL of the stock into flask B. Flasks A and B were each diluted to 20 mL mark of the volumetric flask. What are the concentrations, in molarity, of ASA in flasks A and...
A chemistry student weighs out 0.103g of sulfurous acid (H2SO3) , a diprotic acid, into a...
A chemistry student weighs out 0.103g of sulfurous acid (H2SO3) , a diprotic acid, into a 250.mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.0800M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the final equivalence point. Be sure your answer has the correct number of significant digits.
A chemistry student weighs out 0.280g of ascorbic acid H2C6H6O6 , a diprotic acid, into a...
A chemistry student weighs out 0.280g of ascorbic acid H2C6H6O6 , a diprotic acid, into a 250.mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.2000M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the final equivalence point. Be sure your answer has the correct number of significant digits.
A chemistry student weighs out 0.0768g of ascorbic acid H2C6H6O6, a diprotic acid, into a 250.mL...
A chemistry student weighs out 0.0768g of ascorbic acid H2C6H6O6, a diprotic acid, into a 250.mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1500M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the final equivalence point. Round your answer to 3 significant digits.
A chemistry student weighs out 0.117 g of citric acid (H.CHO), a triprotic acid, into a...
A chemistry student weighs out 0.117 g of citric acid (H.CHO), a triprotic acid, into a 250 mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.0800 M NaOH solution Calculate the volume of NaOH solution the student will need to add to reach the final equivalence point. Round your answer to 3 significant digits.
A chemistry student weighs out 0.140 g of sulfurous acid (H,SO2), a diprotic acid, into a...
A chemistry student weighs out 0.140 g of sulfurous acid (H,SO2), a diprotic acid, into a 250. mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1200 M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the final equivalence point. Be sure your answer has the correct number of significant digits. 1 ml x s ?
A chemistry student weighs out 0.0959 g of acrylic acid (HCH2CHCO2 into a 250. mL volumetric...
A chemistry student weighs out 0.0959 g of acrylic acid (HCH2CHCO2 into a 250. mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.0900 M NaOH solution Calculate the volume of NaOH solution the student will need to add to reach the equivalence point. Round your answer to 3 significant digits. mL ×10
A standard iron solution was prepared by dissolving 0.0100 g of pure iron in acid then transferring to a 50.00 mL volumetric flask with orthophenanthroline as a complexing agent. At a wavelength of 540 nm, the absorbance of the standard was 0.239 in a 1.00 cm cuvette. A 0.149 g sample of an iron ore was crushed and digested in 5 mL of concentrated acid. The digested sample was then transferred to a 10.00 mL volumetric flask and diluted to...
A chemistry student weighs out 0.117 g of citric acid (H.CHO), a triprotic acid, into a 250 mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.0800 M NaOH solution Calculate the volume of NaOH solution the student will need to add to reach the final equivalence point. Round your answer to 3 significant digits.
A chemistry student weighs out 0.140 g of sulfurous acid (H,SO2), a diprotic acid, into a 250. mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1200 M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the final equivalence point. Be sure your answer has the correct number of significant digits. 1 ml x s ?
A chemistry student weighs out 0.0959 g of acrylic acid (HCH2CHCO2 into a 250. mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.0900 M NaOH solution Calculate the volume of NaOH solution the student will need to add to reach the equivalence point. Round your answer to 3 significant digits. mL ×10
Most questions answered within 3 hours.
-
After one round of replication in 14-N media for the Meselson
Stahl experiment, scientists could conclude...
asked 4 minutes ago -
how
does the process of separation of powers function in the united
states, what are its...
asked 7 minutes ago -
If you calculated the concentration of β-carotene in your 2.50
mL sample to be 2.389 ×...
asked 12 minutes ago -
Shanghai Company sells glasses, fine china, and everyday
dinnerware. It uses activity-based costing to determine the...
asked 8 minutes ago -
During the current year D sold a property in class 12 for
$9,000. The property had...
asked 21 minutes ago -
a)i What constant acceleration, in SI units, must a car have to
go from zero to...
asked 22 minutes ago -
Consider a long, closely wound solenoid with 10,000 turns per
meter.
What current, in amperes, is...
asked 26 minutes ago -
14. What organism causes syphilis? How can it be treated and
prevented? Describe the stages of...
asked 26 minutes ago -
Please code this in C++:
// Start
// Declarations
// number currentTuition
// number futureTuition
//...
asked 28 minutes ago -
How does ethics
contribute to customer satisfaction? Assume for your the answer,
the business is either...
asked 42 minutes ago -
Corporate Social Responsibility (CSR) is an initiative to assess
and take responsibility for a company’s impact...
asked 44 minutes ago -
(2 pts) Find the percent of observations from a standard normal
distribution that satisfies each of...
asked 1 hour ago