What is the average Mw for a fatty acid mixture whose fats (1 gram) required 0.0034...
What is the average Mw for a fatty acid mixture whose fats (1 gram) required 0.0034 equivalents of NaOH to titrate. Remember: 1 Fatty acid has 1 equivalent. 1. Ew = Mw (#H+) 2. Ew = mass/eq a.) 294.12 g/mol b.) 145.04 g/mol c.) 345.56 g/mol d.) 132.04 g/mol
Homework Answers
1 fatty acid has 1 equivalent carboxy group. Therefore, to titrate 1 equivalent fatty acid, 1 equivalent NaOH will be required(as acid base reactions occur in equivalence). According to the question, 0.0034 equivalent NaOH is required to titrate 1 g of fatty acid. So, based on the logic discussed above, 1 g of fatty acid must contain 0.0034 equivalents. So weight of 1 equivalent fatty acid, i.e. its equivalence weight is (1/0.0034)g = 294.12 g. Also for fatty acids, molecular weight = equivalence weight.
So, the average molecular weight is a) 294.12 g/mol
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What is the average Mw for a fatty acid mixture whose fats (1
gram) required 0.0034...
Data and Observations I. Determining the Unknown Acid Sample Size CvOt0ni aid identification code...
Data and Observations I. Determining the Unknown Acid Sample Size CvOt0ni aid identification code of unknown weak acid concentration of NaOH solution, M mass of weighing paper plus unknown acid, g mass of weighing paper, g final buret reading, mL initial buret reading, mL 2.0506M 2.0 Ill. Titrating the Unknown Acid identification code of unknown weak acid concentration of NaOH solution, M 500M determination 1 determination 2 LGS G mass of weighing paper plus unknown acid, g mass of weighing...
1.Calculate the mass of malonic acid (C3H4O4, MW 104.07 g/mol) required to prepare 50.00mL of a...
1.Calculate the mass of malonic acid (C3H4O4, MW 104.07 g/mol) required to prepare 50.00mL of a 0.15 M malonic acid solution. 2. Calculate the mass of manganese sulfate monohydrate (MnSO4*H2O, MW 169.01 g/mol) required to prepare 50.00mL of a 0.020 M manganese sulfate solution 3. Calculate the mass of potassium iodate (KIO3,MW 213.99 g/mol) required to prepare 50.00mL of a 0.20 M potassium iodate solution. 4. Calculate the volume of 1.0 M sulfuric acid (H2SO4) required to prepare 100.00mL of...
please show work 22. A 0.670 g sample of an unknown diprotic acid required 25.00 mL...
please show work
22. A 0.670 g sample of an unknown diprotic acid required 25.00 mL of 0.160 M NaOH to titrate it. What is the molar mass (g mol-') of unknown acid? A. 0.167 g mol-' B. 335 g mol-' C. 180. g mol-' D. 167.5 g mol' E. 0.335 g mol-'
One Burger King Bacon Double Cheeseburger contains 33g of fat. Of this, 16g are saturated fats...
One Burger King Bacon Double Cheeseburger contains 33g of fat. Of this, 16g are saturated fats and the rest are monounsaturated and polyunsaturated fats. (A) If we assume that all of the saturated fats are stearic acid (18:0, aka octadecanoic acid, molecular weight 284.5 g/mol) molecules, how many ATP molecules and ATP equivalents are derived from the complete β oxidation of the saturated fats? Remember: For each mole of stearic acid undergoing β oxidation, 120 moles of ATP are generated,...
Please Answer the Following Questions (#1-4) #1 You are proved a buffer whose acid pKa is...
Please Answer the Following Questions (#1-4) #1 You are proved a buffer whose acid pKa is 6.17 and solutions of 1M Hal and 1M NaOH. The initial pH of this buffer is 5.24. Calculate how many milliliters of Hal or NaOH are required to alter the buffer's pH to 6.65 and assume that [HA] and [A-] concentration are in mol units. #2 You are given a 25mL sample of weak acid (HA) of concentration 0.153M, with a Ka of 5.6*10-7...
What would be for the mol reacted,, mol NH4X in sample, and yhr average molar mass?...
What would be for the mol reacted,, mol NH4X in sample, and yhr
average molar mass?
CALCULATIONS A. NaOH Preparation: Approximate molarity of NaOH 0.48 M B. NaOH Standardization: Trial # Mass of KHP E 1.7249 1.9569 1.8799 Volume of NaOH 18.58 L 20.58mLihat 19.71 mL Molarity of NaOH 0.4544 M 0.4654M 0. 3 M 0.4668M Average molarity of NaOH: 0.4668 M 0.4622 M C. Molar Mass of NH X Salt 1. Volume of NaOH 0.025 0.025 0.025L 2. Molarity...
12. Which of the following best describes the components of phospholipids? A) Glycerol, one fatty acid,...
12. Which of the following best describes the components of phospholipids? A) Glycerol, one fatty acid, two phosphate groups and an aminoalcohol B) Glycerol, two fatty acids, one phosphate group, and an aminoalcohol C) Sphingosine, two fatty acid, one phosphate group and an aminoalcohol D) Glycerol, three fatty acids, and a phosphate group 13. When ribose adopts the most stable cyclic structure hemiacetal, which of the following is happening? A. it becomes a furonose C. an acetal is formed B....
D Question 1 2 pts 0.635g of NaOH was placed in a 250 mL volumetric flask...
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Mass of beaker plus solid Mass of water,mno 1.229 4,298-g 41-949 Mass of solid, m Initial...
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moles of oxalix acid moles/molarity of NaOH average molarity volume/molarity of hcl used average molarity NAME...
moles of oxalix acid
moles/molarity of NaOH
average molarity
volume/molarity of hcl used
average molarity
NAME SECTION DATA SHEET LOCKER A CTOR Write a balanced equation for the reaction between H.CO. and NaOH: 90.33/mol 0.878 0836 TRIAL NUMBER a. Mass of oxalic acid used (g) b. Final Buret reading (ml.] c. Initial Buret reading (ml] d. Volume of NaOH used (b-c) Moles of oxalic acid used f. Moles of NaOH used (2 xe) g. Molarity of NaOH (f/d/1000) Average Molarity...
Data and Observations I. Determining the Unknown Acid Sample Size CvOt0ni aid identification code of unknown weak acid concentration of NaOH solution, M mass of weighing paper plus unknown acid, g mass of weighing paper, g final buret reading, mL initial buret reading, mL 2.0506M 2.0 Ill. Titrating the Unknown Acid identification code of unknown weak acid concentration of NaOH solution, M 500M determination 1 determination 2 LGS G mass of weighing paper plus unknown acid, g mass of weighing...
please show work
22. A 0.670 g sample of an unknown diprotic acid required 25.00 mL of 0.160 M NaOH to titrate it. What is the molar mass (g mol-') of unknown acid? A. 0.167 g mol-' B. 335 g mol-' C. 180. g mol-' D. 167.5 g mol' E. 0.335 g mol-'
What would be for the mol reacted,, mol NH4X in sample, and yhr
average molar mass?
CALCULATIONS A. NaOH Preparation: Approximate molarity of NaOH 0.48 M B. NaOH Standardization: Trial # Mass of KHP E 1.7249 1.9569 1.8799 Volume of NaOH 18.58 L 20.58mLihat 19.71 mL Molarity of NaOH 0.4544 M 0.4654M 0. 3 M 0.4668M Average molarity of NaOH: 0.4668 M 0.4622 M C. Molar Mass of NH X Salt 1. Volume of NaOH 0.025 0.025 0.025L 2. Molarity...
12. Which of the following best describes the components of phospholipids? A) Glycerol, one fatty acid, two phosphate groups and an aminoalcohol B) Glycerol, two fatty acids, one phosphate group, and an aminoalcohol C) Sphingosine, two fatty acid, one phosphate group and an aminoalcohol D) Glycerol, three fatty acids, and a phosphate group 13. When ribose adopts the most stable cyclic structure hemiacetal, which of the following is happening? A. it becomes a furonose C. an acetal is formed B....
D Question 1 2 pts 0.635g of NaOH was placed in a 250 mL volumetric flask and distilled water was added to the 250.00 mL mark. What volume of 0.231M sulfuric acid, in mL, is required to titrate a 25.00 mL aliquot of the NaOH solution? Round your answer to two decimal places. Molar Mass: Na 23.0 g/mol, S 32.1 g/mol, O 16.0 g/mol, H 1.0g/mol
Mass of beaker plus solid Mass of water,mno 1.229 4,298-g 41-949 Mass of solid, m Initial temperature Final temperature a1,0 for the reaction (Eq. 1 ) (SH. = 4.18 J/g°C) ΔH for the reaction (Eq.5) The quantity you have just calculated is approximately" equal to the heat of solution of your sample. Calculate OC - joules joules the heat of solution per gram of solid sample. The solution reaction is endothermic exothermic. (Underline the correct answer.) Give your reasoning. Solid...
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moles/molarity of NaOH
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NAME SECTION DATA SHEET LOCKER A CTOR Write a balanced equation for the reaction between H.CO. and NaOH: 90.33/mol 0.878 0836 TRIAL NUMBER a. Mass of oxalic acid used (g) b. Final Buret reading (ml.] c. Initial Buret reading (ml] d. Volume of NaOH used (b-c) Moles of oxalic acid used f. Moles of NaOH used (2 xe) g. Molarity of NaOH (f/d/1000) Average Molarity...
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