I am having a difficult time remembering how to do this. I know the formula is...
I am having a difficult time remembering how to do this. I know the formula is C1V1=C2=V2
You need to prepare 21 mL of a 2.6 M solution of EDTA. No EDTA powder is available, but you do have 1 L of 13.8 M EDTA solution. Step by step, how would you prepare this solution?
Things you may or may not need to know:
• EDTA is heat stable.
• EDTA is available to you only in liquid form (see above).
• FW = 292.24
• Density = 860 mg / mL
Homework Answers
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I am having a difficult time remembering how to do this. I know
the formula is...
I dont know how to do these calculations Volumetric calculations • Example 4: The zinc in...
I dont know how to do these calculations
Volumetric calculations • Example 4: The zinc in a 0.7556-9 sample of foot powder was titrated with 21.27 mL of 0.01654 M EDTA. Calculate the percentage of zinc in the sample. Volumetric calculations • Example 5: A 0.7120-9 specimen of iron ore was brought into solution and passed through a Jones reductor. Titration of the Fe(II) required 39.21 mL of 0.02086 M KMnO4. Express the results of the analysis in terms of...
I know that i must make an ice chart and when i do, i get zero for both of the products.
I know that i must make an ice chart and when i do, i get zero
for both of the products.
11. Ethylenediamminetetraacetic acid (EDTA ) binds metals ions to form complexes, thus can be used to determine concentrations of metal ions, as well as for use in chelation therapy. Calculate the concentration of [Co2] in solution after the addition of 48.0 mL of 0.050 M EDTA to a 50.00-ml sample of 0.048 M [Co]. 10 pts
11. Ethylenediamminetetraacetic acid...
Can someone walk through a few simple algebraic solution-making problems? I know how to use formulas,...
Can someone walk through a few simple algebraic solution-making problems? I know how to use formulas, such as C1V1 = C2V2, however I'm having issues with the conceptual part, mostly for when using two solutes. Problem #1: Make 200 mL of a saline that has 5 mMol NaCl and 15 mMol KCl. Stocks are 0.1 M NaCl & 0.2 M KCl. (and if it's simply the C1V1=C2V2 of one, and then the second, added together in a 200 mL flask...
I dont know if i did this correctly and i hope someone can help me. *COULD YOU CHECK THE DATA TAB...
i dont know if i did this correctly and i hope someone
can help me.
*COULD YOU CHECK THE DATA TABLE AND ANSWER THE 2 QUESTIONS
BELOW*
1. write the net ionic equation for neutralization of
HCL by the buffer?
2. write the net ionic equation for neutralization of NaOH by the
buffer.
Buffer: 0.080 M Acid/0.040 M Conjugate Base Formula ofsolid Bronsted acid Natt (eg Mass of acid required to prepare 100 mL of 0.080 M solution 672 Calculations...
I am needing help finding the answers the first. I am just having a bad brain...
I
am needing help finding the answers the first. I am just having a
bad brain fart and cant figure it out to save my life.
please show how you calculated it and found what you
did.
Thanks!!
Data and Calculations Step 3 Initial concentrations [Pb2+ ] initial = Moles of Pb2+ ion = Moles of Clion = Step 4 Is there any precipitate? Record the total volume of HCI added until Total volume of HCI added: LOML the precipitate...
How do metal atoms interact with each other to form bonds? A. by London dispersion forces...
How do metal atoms interact with each other to form bonds? A. by London dispersion forces B. overlap of atomic orbitals to create new molecular orbitals where all the electrons belong to all the metal nuclei C. they form a solid made up of individual non-interacting atoms One easy way to calculate concentrations after dilution is given by the formula C1V1 = C2V2 where C1 and V1 are the concentration (in M) before dilution, and C2 and V2 are the...
Making Solutions Practice Problems: I. How would you prepare 100 ml of a 30% (w/v) solution...
Making Solutions Practice Problems: I. How would you prepare 100 ml of a 30% (w/v) solution of polyethylene glycol (PEG)? 2. How would you prepare 50 ml of a 9 % (w /v ) solution of NaCI? 3. How would you prepare 200 ml of 70 % ( v /v ) solution of ethanol from a stock of 95% ethanol? How would you prepare 200 ml of 0.3 M NaCl? (NaCl MW 58.44) 4. 5. How are 50 ml of...
Please help with solving these problems I am having a hard time trying to work them...
Please help with solving these problems I am having a hard time trying to work them out 1. You need to make a 15% solution using 25 ml of a 80 % stock solution. How much sterile saline do you need to add to make this product? Round your answer to one decimal place (tenths), where appropriate. 2. Your are given 25 ml of a 80% solution and told to add (not dilute to) 275 ml. What will the final...
how to solve number 2 and 3 The following chemicals have the indicated formula weights: Sucrose...
how
to solve number 2 and 3
The following chemicals have the indicated formula weights: Sucrose 342.3, Potassium dihydrogen phosphate (KH P04) 136.09, Tris 121.14 You also have the following solutions already made: 20% SDS, SM NaCl, 500 mM EDTA, You have a 40% glycerol solution, and 10X TBE pt) mularul Mag List the steps to make the following buffers (be specific and show calculations): 1. 1 liter of a solution containing: 0.5 M sucrose, 0.05 M NaCl, 0.02 M...
I already know how to do most of this, dont do everything I am only having...
I already know how to do most of this, dont do everything
I am only having trouble trying to figure out PPP adjusted wage
(far right in the graph)
i only need to know how to figure out PPP adjusted wage (that is
it)
Please show work
3. Consider the following information about Nicaragua: Real-一1% change wage wage in wage base 2014 change adjusted 14 real wage year cordobas wage 1999 43.98/ 2.50/5,68 7.67n/a $737.5 1999 43.98 n/ 2004|59.32-164.88% 13.5010...
I dont know how to do these calculations
Volumetric calculations • Example 4: The zinc in a 0.7556-9 sample of foot powder was titrated with 21.27 mL of 0.01654 M EDTA. Calculate the percentage of zinc in the sample. Volumetric calculations • Example 5: A 0.7120-9 specimen of iron ore was brought into solution and passed through a Jones reductor. Titration of the Fe(II) required 39.21 mL of 0.02086 M KMnO4. Express the results of the analysis in terms of...
I know that i must make an ice chart and when i do, i get zero
for both of the products.
11. Ethylenediamminetetraacetic acid (EDTA ) binds metals ions to form complexes, thus can be used to determine concentrations of metal ions, as well as for use in chelation therapy. Calculate the concentration of [Co2] in solution after the addition of 48.0 mL of 0.050 M EDTA to a 50.00-ml sample of 0.048 M [Co]. 10 pts
11. Ethylenediamminetetraacetic acid...
i dont know if i did this correctly and i hope someone
can help me.
*COULD YOU CHECK THE DATA TABLE AND ANSWER THE 2 QUESTIONS
BELOW*
1. write the net ionic equation for neutralization of
HCL by the buffer?
2. write the net ionic equation for neutralization of NaOH by the
buffer.
Buffer: 0.080 M Acid/0.040 M Conjugate Base Formula ofsolid Bronsted acid Natt (eg Mass of acid required to prepare 100 mL of 0.080 M solution 672 Calculations...
I
am needing help finding the answers the first. I am just having a
bad brain fart and cant figure it out to save my life.
please show how you calculated it and found what you
did.
Thanks!!
Data and Calculations Step 3 Initial concentrations [Pb2+ ] initial = Moles of Pb2+ ion = Moles of Clion = Step 4 Is there any precipitate? Record the total volume of HCI added until Total volume of HCI added: LOML the precipitate...
Making Solutions Practice Problems: I. How would you prepare 100 ml of a 30% (w/v) solution of polyethylene glycol (PEG)? 2. How would you prepare 50 ml of a 9 % (w /v ) solution of NaCI? 3. How would you prepare 200 ml of 70 % ( v /v ) solution of ethanol from a stock of 95% ethanol? How would you prepare 200 ml of 0.3 M NaCl? (NaCl MW 58.44) 4. 5. How are 50 ml of...
how
to solve number 2 and 3
The following chemicals have the indicated formula weights: Sucrose 342.3, Potassium dihydrogen phosphate (KH P04) 136.09, Tris 121.14 You also have the following solutions already made: 20% SDS, SM NaCl, 500 mM EDTA, You have a 40% glycerol solution, and 10X TBE pt) mularul Mag List the steps to make the following buffers (be specific and show calculations): 1. 1 liter of a solution containing: 0.5 M sucrose, 0.05 M NaCl, 0.02 M...
I already know how to do most of this, dont do everything
I am only having trouble trying to figure out PPP adjusted wage
(far right in the graph)
i only need to know how to figure out PPP adjusted wage (that is
it)
Please show work
3. Consider the following information about Nicaragua: Real-一1% change wage wage in wage base 2014 change adjusted 14 real wage year cordobas wage 1999 43.98/ 2.50/5,68 7.67n/a $737.5 1999 43.98 n/ 2004|59.32-164.88% 13.5010...
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