Homework Answers
Solution:
% w/w = (mass of solute / mass of solution) x 100
Thus,
%w/w = mass of NaClO / ( mass of NaClO+ mass of undilluted sample ) x 100
%w/w = 0.05583 g / (0.05583 g + 1.028 g)
= (0.05583 / 1.08383) x 100 = 5.151
= 5.15 %
Add Answer to:
for question #5, i divided #3 and #4 and then multiplied by
100. the answer the...
when i divide #3 and #4 and then multiply by 100 i get 5.43093385214 and i have to use the correct sig figs. what a...
when i divide #3 and #4 and then multiply by 100 i get
5.43093385214 and i have to use the correct sig figs. what am i
doing wrong?
Suppose a student diluted and titrated a bleach unknown exactly as described in the experimental procedure except only a single titration was performed which required 15.04 mL of 0.100 M Na2S2O3. The density of the original, undiluted bleach unknown was 1.028 g/mL 1. Calculate the number of moles of Na2S2O3 used in...
ive tried getting help for these problems numerous times and havent had any luck. Suppose a...
ive tried getting help for these problems numerous times and
havent had any luck.
Suppose a student diluted and titrated a bleach unknown exactly as described in the experimental procedure, except only a single titration was performed which required 15.04 mL of 0.100 M Na S 02. The density of the original, undiluted bleach unknown was 1.028 g/mL 1. Calculate the number of moles of Na2S2O3 used in the titration 0.00150 mol 2. Calculate the number of moles of CIO...
Question 6 Status: Tries remaining: 3 | Points possible: 1.00 Suppose in an experiment to determine...
Question 6 Status: Tries remaining: 3 | Points possible: 1.00 Suppose in an experiment to determine the amount of sodium hypochlorite in bleach, 0.0000460 mol KIO3 were titrated with an unknown solution of Na S,0a and the endpoint was reached after 17.80 mL. How many moles of Na,S203 did this require? Answer: CHECK Question 8 Status: Tries remaining: 3 | Points possible: 1.00 A 25.00 mL solution containing 0.035 M sodium acetate is titrated witha 0.098 M solution of HCl....
Your ticket will appear here once you na ve correctly ans w ered an or ше реао quesuon. Prelab for Experiment 6-...
Your ticket will appear here once you na ve correctly ans w ered an or ше реао quesuon. Prelab for Experiment 6- Titration of an Unknown Acid In this prelab, answers to questions l and 2 should be reported toateastisennoantngurs Scientific notation format 2.34E 4. The 'E' must be capitalized." The prelab questions mirror those that you will be doing at the end of the experiment. Bring your work for this prelab assignment to lab and you will have a...
just need help with questions 3. a & b always rate!!! Introduction Titration is a common...
just need help with questions 3. a & b
always rate!!!
Introduction Titration is a common analytical technique that is used to verify the concentrations of chemicals before they are sold as commercial products, in a process known as quality control. In this lab, you will be using a redox titration to find the concentration of the strong oxidizing agent hypochlorite (CIO) which is the active ingredient in bleach. Oxidizing and reducing agents are often determined using a redox titration....
I need help with questions 4 to 7. I have solved 1 to 3 as reference....
I need help with questions 4 to 7. I have solved 1 to 3 as
reference. Thank you.
10:COMPARISON OF BUFFERED AND UNBUFFERED SYSTEMS To Sindents: This labit hranih alat date wahisand calculations of buffers and pH, there is no date. Your instructor will assign a specific buffer for or instructor will assign a specific buffer for you to make in the lab. "You will then be asked to perform serveral calculations based on your migue buffer assignment. way bandurite...
3. If 15.0 mL of 0.125 M phosphoric acid is titrated with 0.100 M NaOH, what...
3. If 15.0 mL of 0.125 M phosphoric acid is titrated with 0.100 M NaOH, what volume of the titrant (in mL) must be added to completely neutralize the acid? Show all of your work (including the chemical equation). (1 point) Post-lab Questions: Experiment #9: Acid-Base Titrations Student Learning Objectives : Students will gain practice with the accurate preparation of solutions. Students will perform acid-base titrations and prepare titration curves. Students will identify strong and weak acids by the shapes...
Can you answer question 4 & 5? The experiment and porcedure is posted below Question 4...
Can
you answer question 4 & 5? The experiment and porcedure is
posted below
Question 4 & 5
CHM3120C Analytical Chemistry Lab Lab 7. Spectrophotometric Determination of Iron in Mohr's Salt with o-Phenanthroline Required Reagents and Supplies: 50 mL of 0.0005M -0.0006 M of Mohr's solution (unknown), 10 g of Hydroxylamine hydrochloride (NH2OH, HCI), 500 mL of o-phenanthroline solution (contains 0.5 g of o-phenanthroline monohydrate), 83 g of sodium acetate (NaOAc. 3H20) in 500 mL of water (for 1.2 M...
pl#3 QUESTION 1 A mixture of 0.810g of BaCl 2.2H 2O and Na 2SO 4 produces...
pl#3 QUESTION 1 A mixture of 0.810g of BaCl 2.2H 2O and Na 2SO 4 produces 0.466g of BaSO 4, the limiting reactant in the reaction is Na 2SO 4. Calculate the percent of BaCl 2.2H 2O and Na 2SO 4 in the original mixture. QUESTION 2 Because of the finely divided nature of the Ba 3(PO 4) 2 precipitate, some of it passes through the filter and is not collected. How does this loss of precipitate affect the reported...
lab report titration help please! additional images on lab report 3. Federal standards require that any...
lab report titration help please!
additional images on lab report
3. Federal standards require that any commercial material called "vinegar" must contain as cast acetic acid. According to your results in question 4, does the vinegar sample you titrated meet the Federal standards? Explain why or why not. PART B: IDENTIFICATION OF AN UNKNOWN ACID DATA Molarity of NaOH used Mass of unknown acid used 0.050M 0.5989 14.43mc Average volume of NaOH used in the titration CALCULATIONS 1. Using the...
when i divide #3 and #4 and then multiply by 100 i get
5.43093385214 and i have to use the correct sig figs. what am i
doing wrong?
Suppose a student diluted and titrated a bleach unknown exactly as described in the experimental procedure except only a single titration was performed which required 15.04 mL of 0.100 M Na2S2O3. The density of the original, undiluted bleach unknown was 1.028 g/mL 1. Calculate the number of moles of Na2S2O3 used in...
ive tried getting help for these problems numerous times and
havent had any luck.
Suppose a student diluted and titrated a bleach unknown exactly as described in the experimental procedure, except only a single titration was performed which required 15.04 mL of 0.100 M Na S 02. The density of the original, undiluted bleach unknown was 1.028 g/mL 1. Calculate the number of moles of Na2S2O3 used in the titration 0.00150 mol 2. Calculate the number of moles of CIO...
Question 6 Status: Tries remaining: 3 | Points possible: 1.00 Suppose in an experiment to determine the amount of sodium hypochlorite in bleach, 0.0000460 mol KIO3 were titrated with an unknown solution of Na S,0a and the endpoint was reached after 17.80 mL. How many moles of Na,S203 did this require? Answer: CHECK Question 8 Status: Tries remaining: 3 | Points possible: 1.00 A 25.00 mL solution containing 0.035 M sodium acetate is titrated witha 0.098 M solution of HCl....
Your ticket will appear here once you na ve correctly ans w ered an or ше реао quesuon. Prelab for Experiment 6- Titration of an Unknown Acid In this prelab, answers to questions l and 2 should be reported toateastisennoantngurs Scientific notation format 2.34E 4. The 'E' must be capitalized." The prelab questions mirror those that you will be doing at the end of the experiment. Bring your work for this prelab assignment to lab and you will have a...
just need help with questions 3. a & b
always rate!!!
Introduction Titration is a common analytical technique that is used to verify the concentrations of chemicals before they are sold as commercial products, in a process known as quality control. In this lab, you will be using a redox titration to find the concentration of the strong oxidizing agent hypochlorite (CIO) which is the active ingredient in bleach. Oxidizing and reducing agents are often determined using a redox titration....
I need help with questions 4 to 7. I have solved 1 to 3 as
reference. Thank you.
10:COMPARISON OF BUFFERED AND UNBUFFERED SYSTEMS To Sindents: This labit hranih alat date wahisand calculations of buffers and pH, there is no date. Your instructor will assign a specific buffer for or instructor will assign a specific buffer for you to make in the lab. "You will then be asked to perform serveral calculations based on your migue buffer assignment. way bandurite...
3. If 15.0 mL of 0.125 M phosphoric acid is titrated with 0.100 M NaOH, what volume of the titrant (in mL) must be added to completely neutralize the acid? Show all of your work (including the chemical equation). (1 point) Post-lab Questions: Experiment #9: Acid-Base Titrations Student Learning Objectives : Students will gain practice with the accurate preparation of solutions. Students will perform acid-base titrations and prepare titration curves. Students will identify strong and weak acids by the shapes...
Can
you answer question 4 & 5? The experiment and porcedure is
posted below
Question 4 & 5
CHM3120C Analytical Chemistry Lab Lab 7. Spectrophotometric Determination of Iron in Mohr's Salt with o-Phenanthroline Required Reagents and Supplies: 50 mL of 0.0005M -0.0006 M of Mohr's solution (unknown), 10 g of Hydroxylamine hydrochloride (NH2OH, HCI), 500 mL of o-phenanthroline solution (contains 0.5 g of o-phenanthroline monohydrate), 83 g of sodium acetate (NaOAc. 3H20) in 500 mL of water (for 1.2 M...
lab report titration help please!
additional images on lab report
3. Federal standards require that any commercial material called "vinegar" must contain as cast acetic acid. According to your results in question 4, does the vinegar sample you titrated meet the Federal standards? Explain why or why not. PART B: IDENTIFICATION OF AN UNKNOWN ACID DATA Molarity of NaOH used Mass of unknown acid used 0.050M 0.5989 14.43mc Average volume of NaOH used in the titration CALCULATIONS 1. Using the...
Most questions answered within 3 hours.
-
Discuss graph representation, Breadth-first search and
Depth-first search. Use examples to highlight pros and
cons.
asked 1 minute from now -
what are the impacts of droughts in east Africa on the:
1) economy:
2) agriculture:
3)...
asked 35 seconds ago -
Fleas can jump quite high; experiments show that they can reach
an altitude of 120 times...
asked 6 minutes ago -
The rate constant for this first-order reaction is 0.0520 s–1 at
400 °C.
A----> Product
After...
asked 11 minutes ago -
boolean a = ( true && false );
System.out.println( a );
what is the output of...
asked 15 minutes ago -
NEED HELP ASAP PLEASE! (I already answered 1-4)
The comparative financial statements of Marshall Inc. are...
asked 22 minutes ago -
PLEASE RESPOND TO POST. DO YOU AGREE OR DISAGREE? IF SO WHY.The
five traditional intelligence collection...
asked 21 minutes ago -
Grandma Assignment: This was my previous professor’s son’s
fourth grade homework assign- ment. Maxine, Mabel, Mavis,...
asked 23 minutes ago -
Write the pseudocode below as a working Python program.
Take a screenshot of your code and...
asked 38 minutes ago -
Calculate the concentrations of all species in a 0.810 M
Na2SO30.810 M Na2SO3 (sodium sulfite) solution....
asked 45 minutes ago -
Deciding Whether to Use Flexible Staffing
The Kaiser Manufacturing Com pany (KMC) has been in existence...
asked 35 minutes ago -
True or False for the following statement:
All of the B cells in your body right...
asked 43 minutes ago