You have 659.3 mL of a stock solution 4.660 M HCl. For a particular experiment, your...
You have 659.3 mL of a stock solution 4.660 M HCl. For a particular experiment, your lab partner prepared a diluted solution for you to use. In her notes, you read: " Using a volumetric pipet, took 246.54 mL of stock solution and diluted it to 739.21 ml in a volumetric flask. Then, took 100.00 mL of that solution and diluted it to 194.63 mL in a second volumetric flask. " What is the concentration that you should report for your experiment?
Homework Answers
First of all we know about stock solution that is a solution of
known concentration ,here we do the process as dilution and here
use for mulae is M1V1 =M2V2 in first case and in second case as
M2V2=M3V3.
Add Answer to:
You have 659.3 mL of a stock solution 4.660 M HCl. For a
particular experiment, your...
You prepared a set of standard solutions by serial dilutions. You started with a stock solution...
You prepared a set of standard solutions by serial dilutions. You started with a stock solution of bromocresol green with a concentration of 0.213 M. The following standard solutions were prepared as described below. Solution A: Stock solution of bromocresol green at a concentration of 0.213 M. Solution B: 25 mL of solution A was diluted to 50 mL in a volumetric flask. Solution C: 25 mL of solution B was diluted to 50 mL in a volumetric flask. Solution...
A pipet is used to transfer 10.00 mL of a 4.00 M stock solution in flask...
A pipet is used to transfer 10.00 mL of a 4.00 M stock solution in flask “S” to a 25.00-mL volumetric flask “A,” which is then diluted with DI H2O to the calibration mark. The solution is thoroughly mixed. Next, 1.00 mL of the solution in volumetric flask “A” is transferred by pipet to a 50.00-mL volumetric flask “B” and then diluted with DI H2O to the calibration mark. Calculate the molarity of the solution in volumetric flask “B.”
Suppose you have 100.00 mL of a solution of a dye and transfer 2.00 mL of...
Suppose you have 100.00 mL of a solution of a dye and transfer 2.00 mL of the solution to a 100.00 mL volumetric flask. After adding water to the 100.00 mL mark, you take 5.00 mL of that solution and again dilute to 100.00 mL. If you find the dye concentration in the final diluted sample is 0.000129 M, what was the dye concentration in the original solution? Concentration
Stock solutions are HCl and NaOH If you are given the following solids: NasPO4 K3PO4 NAH2PO4...
Stock solutions are HCl and NaOH
If you are given the following solids: NasPO4 K3PO4 NAH2PO4 2. MW 174.17 g/mol MW= 141.96 g/mol MW- 136.08 g/mol K2HPO4 NazHPO4 KH2PO4 MW = 163.94 g/mol MW 212.26 g/mol MW 119.98 g/mol Which compounds would you use to prepare your stock solutions? Why? given deionized water, the solid you selected in the previous question and the following If you are volumetric glassware: 100.00 ml volumetric flask(s) 250.00 ml volumetric flask(s) 25.00 ml volumetric...
You must read the experiment and then answer these questions. 1. Look at the procedure for...
You must read the experiment and then answer these questions. 1. Look at the procedure for using a pipet. Why should you not force the last remaining amount of liquid out of the pipet? 2. If you have a 50.00 mL volumetric flask (a flask marked at a specific volume) and a pipette that measures up to 10-mL with marks to the nearest 1/10 mL, how much solute would you add to the flask to make 50.00 mL of a...
Question 1 2 pts 3.34 mL of an unknown glucose solution was diluted in a 100.00 mL of volumetric flask with distill...
Question 1 2 pts 3.34 mL of an unknown glucose solution was diluted in a 100.00 mL of volumetric flask with distilled water. 10mL of that solution and 4.00 mL of the ferricyanide reagent was placed in a second 100.00 mL volumetric flask and diluted to the mark with distilled water. Spectrophotometric analysis of the glucose/ferricyanide solution showed that the concentration of glucose was 0.070 M. What is the concentration of glucose in the unknown solution?
Question 1 2 pts 3.34 mL of an unknown glucose solution was diluted in a 100.00 mL of volumetric flask with distill...
Question 1 2 pts 3.34 mL of an unknown glucose solution was diluted in a 100.00 mL of volumetric flask with distilled water. 10mL of that solution and 4.00 mL of the ferricyanide reagent was placed in a second 100.00 mL volumetric flask and diluted to the mark with distilled water. Spectrophotometric analysis of the glucose/ferricyanide solution showed that the concentration of glucose was 0.070 M. What is the concentration of glucose in the unknown solution?
Your lab partner asks you to make 100 mL of a 1.50 M HCl solution for...
Your lab partner asks you to make 100 mL of a 1.50 M HCl solution for an experiment she would like to do. If ΔHsolution is -74.84 kJ/mol for hydrochloric acid, what would be the final temperature of a solution prepared by dissolving the necessary amount of HCl in 100.0 mL of room temperature (23.0 oC) water?
A 2.0 M stock solution of Tylenol was diluted as follows: 15.000 mL of stock solution...
A 2.0 M stock solution of Tylenol was diluted as follows: 15.000 mL of stock solution was added to a 250-ml volumetric flask. Water was added to the flask until the solution's meniscus was at the line on the neck of the flask. 5.000 mL of solution from the 250-ml volumetric flask was added to a 100-ml volumetric flask. Water was added to the flask until the solution's meniscus was at the line on the neck of the flask. Calculate...
Calculate the concentration of the standard HCl solution you prepared. Determine this concentration for each trial...
Calculate the concentration of the standard HCl solution you
prepared. Determine this
concentration for each trial and the average and standard
deviation for all three trials.
Part B-Preparation and standardization of an HCl Solution 1. Before you can titrate your saturated Ca(oH)a solutions, you must prepare and standardize a dilute solution of Hcl. With a graduated cylinder measure at least 6 mL of the stock Hcl lution, transfer it to a 125 mL Erlenmeyer, and dilute to approximately 100 mL...
You prepared a set of standard solutions by serial dilutions. You started with a stock solution of bromocresol green with a concentration of 0.213 M. The following standard solutions were prepared as described below. Solution A: Stock solution of bromocresol green at a concentration of 0.213 M. Solution B: 25 mL of solution A was diluted to 50 mL in a volumetric flask. Solution C: 25 mL of solution B was diluted to 50 mL in a volumetric flask. Solution...
Suppose you have 100.00 mL of a solution of a dye and transfer 2.00 mL of the solution to a 100.00 mL volumetric flask. After adding water to the 100.00 mL mark, you take 5.00 mL of that solution and again dilute to 100.00 mL. If you find the dye concentration in the final diluted sample is 0.000129 M, what was the dye concentration in the original solution? Concentration
Stock solutions are HCl and NaOH
If you are given the following solids: NasPO4 K3PO4 NAH2PO4 2. MW 174.17 g/mol MW= 141.96 g/mol MW- 136.08 g/mol K2HPO4 NazHPO4 KH2PO4 MW = 163.94 g/mol MW 212.26 g/mol MW 119.98 g/mol Which compounds would you use to prepare your stock solutions? Why? given deionized water, the solid you selected in the previous question and the following If you are volumetric glassware: 100.00 ml volumetric flask(s) 250.00 ml volumetric flask(s) 25.00 ml volumetric...
You must read the experiment and then answer these questions. 1. Look at the procedure for using a pipet. Why should you not force the last remaining amount of liquid out of the pipet? 2. If you have a 50.00 mL volumetric flask (a flask marked at a specific volume) and a pipette that measures up to 10-mL with marks to the nearest 1/10 mL, how much solute would you add to the flask to make 50.00 mL of a...
Question 1 2 pts 3.34 mL of an unknown glucose solution was diluted in a 100.00 mL of volumetric flask with distilled water. 10mL of that solution and 4.00 mL of the ferricyanide reagent was placed in a second 100.00 mL volumetric flask and diluted to the mark with distilled water. Spectrophotometric analysis of the glucose/ferricyanide solution showed that the concentration of glucose was 0.070 M. What is the concentration of glucose in the unknown solution?
Question 1 2 pts 3.34 mL of an unknown glucose solution was diluted in a 100.00 mL of volumetric flask with distilled water. 10mL of that solution and 4.00 mL of the ferricyanide reagent was placed in a second 100.00 mL volumetric flask and diluted to the mark with distilled water. Spectrophotometric analysis of the glucose/ferricyanide solution showed that the concentration of glucose was 0.070 M. What is the concentration of glucose in the unknown solution?
A 2.0 M stock solution of Tylenol was diluted as follows: 15.000 mL of stock solution was added to a 250-ml volumetric flask. Water was added to the flask until the solution's meniscus was at the line on the neck of the flask. 5.000 mL of solution from the 250-ml volumetric flask was added to a 100-ml volumetric flask. Water was added to the flask until the solution's meniscus was at the line on the neck of the flask. Calculate...
Calculate the concentration of the standard HCl solution you
prepared. Determine this
concentration for each trial and the average and standard
deviation for all three trials.
Part B-Preparation and standardization of an HCl Solution 1. Before you can titrate your saturated Ca(oH)a solutions, you must prepare and standardize a dilute solution of Hcl. With a graduated cylinder measure at least 6 mL of the stock Hcl lution, transfer it to a 125 mL Erlenmeyer, and dilute to approximately 100 mL...
Most questions answered within 3 hours.
-
Assuming you are the head of the software development unit at
Cyber.Soft, explain and justify why...
asked 8 seconds from now -
Magnesium and nitrogen react in a combination reaction to
produce magnesium nitride. 3 Mg + N2...
asked 7 minutes ago -
Two electrons are initially at rest separated by a distance of
2nm. At time t=0, they...
asked 5 minutes ago -
A martial artist is practicing breaking 5 boards. He is able to
break aboard with probability...
asked 13 minutes ago -
The rate constant of a first-order reaction is 2.95 × 10−4 s−1
at 350.° C. If...
asked 16 minutes ago -
implement a class called PiggyBank that will be used to
represent a collection of coins. Functionality...
asked 7 minutes ago -
2. Use the following information in the table to answer the
following questions. (Numbers are in...
asked 13 minutes ago -
The fuel economy of a 2011 Lexus RX 350 2wd 6 cylinder 3.5 L
automatic 5...
asked 21 minutes ago -
i.
the synthesized compund 2-bromo-butanal i have a IR peak at about
3200 and one at...
asked 21 minutes ago -
A
752 mL sample of water was placed in a 1000 gram pan of aluminum.
The...
asked 32 minutes ago -
1.In the context of chelation, what does binding strength mean?
What happens at the molecular level...
asked 25 minutes ago -
Describe two obstacles that makes fixing atmospheric nitrogen
difficult.
asked 44 minutes ago