Dilutions This morning your professor made 100 ml solution of so mM potassium phosphate trihydrate solution...
Dilutions
This morning your professor made 100 ml solution of so mM potassium phosphate trihydrate solution (FW 228.2)
A)Indicate how many moles your professor used. Show your work.
B) How many grams did she use? Show your work
C) Describe how you would perform this task if you had to make the solution yourself?
Homework Answers
Add Answer to:
Dilutions
This morning
your professor made 100 ml solution of so mM potassium phosphate
trihydrate solution...
In order to prepare 100 mL of a 0.50 M sodium phosphate buffer, pH 7.9, how...
In order to prepare 100 mL of a 0.50 M sodium phosphate buffer, pH 7.9, how many grams of sodium phosphate monobasic must you add to your solution? Use MW = 137.99 g/mol for sodium phosphate monobasic and pKa = 7.2 for sodium phosphate
How many grams of potassium permanganate (F.W. 158.0) would you need to make 250 mL of...
How many grams of potassium permanganate (F.W. 158.0) would you need to make 250 mL of a 246 mM solution? Enter your numerical result in grams without the unit to a precision of 0.01 g.
You are instrucbed to create 900. mL of a 0.59 M phosphate buffer with a pH...
You are instrucbed to create 900. mL of a 0.59 M phosphate buffer with a pH of 6.4. You have phosphoric acid and the sodium salts NaH2PO4, Na2HPO4, and Na3PO4 available. numerical answers to three significant H3PO4(s)H20)H3 aH2PO4(aq) H2PO4-(aq) + H2O(りーH3O + (aq) + HP042-(aq) Ka2-6.2×10-8 HPO()H20()H3)PO43 (aq) Ka 4.8x10-13 Ka 6.9x10-2 Which of the available chemicals will you use for the acid component of your buffer? O H3PO4 O Na2HPO Na3PO4 Which of the available chemicals will you use...
please define a formula unit in your explanation. What does 3.3 *10^24 forumla units of silver...
please define a formula unit in your explanation. What does
3.3 *10^24 forumla units of silver phosphate mean? I know that a
formula unit is the ratio of the ions in an ionic compound but how
ido you apply 3.3*10^24?
2. Use the information in the answers you obtained in question number one as necessary to answer the following questions. a. Determine the number of moles in 3.3 x 10-4 formula units of silver phosphate. b. Determine the mass of...
Your P.I. asks you to make 1 l of a 100 mM NaOH solution using a...
Your P.I. asks you to make 1 l of a 100 mM NaOH solution using a 2 M NaOH stock solution and water. How many ml of 2 M NaOH and water do you have to mix to get your solution? What is the expected pH of this solution? (Answer is 50 ml of a 2M NaOH solution + 950 ml water and pH = 13... but please show work on how to get these answers!!) thank you and will...
How much dibasic sodium phosphate should you use to make 75 mL of an 8.1 mM...
How much dibasic sodium phosphate should you use to make 75 mL of an 8.1 mM solution? MV= 141.96 g/mol A. 1.105 g B. 0.086 g C. 0.864 g D. 1.204 g E. None of the above Please show work. Thank you :)
7. You make 1 Liter of an aqueous solution containing 9.20 ml of 57.8 mM acetic...
7. You make 1 Liter of an aqueous solution containing 9.20 ml of 57.8 mM acetic acid and 56.2 mg of sodium acetate (MW = 82.0 g/mole). a. How many moles of acetic acid did you add? b. How many moles of sodium acetate did you add? c. What is the appropriate formula for calculating the pH of the above solution? d. What is the pH of the above solution? Is it acidic or basic? Slightly or strongly so? (Use...
Suppose 0.112 g of zinc bromide is dissolved in 100. mL. of a 27.0 mM aqueous solution of potassium carbonate
Suppose 0.112 g of zinc bromide is dissolved in 100. mL. of a 27.0 mM aqueous solution of potassium carbonate. Calculate the final molarity of bromide anion in the solution. You can assume the volume of the solution doesn't change when the zinc bromide is dissolved in it. Be sure your answer has the correct number of significant digits.
8. Describe briefly how you would prepare, with a minimum number of dilutions, a 1x 10 Msolution of NaOH given the following: a 0.08 M stock solution of NaOH; 2, 5, 10 mL pipettes; 10, 20, 50, 100...
8. Describe briefly how you would prepare, with a minimum number of dilutions, a 1x 10 Msolution of NaOH given the following: a 0.08 M stock solution of NaOH; 2, 5, 10 mL pipettes; 10, 20, 50, 100 mL volumetric flasks. (Show your working)
8. Describe briefly how you would prepare, with a minimum number of dilutions, a 1x 10 Msolution of NaOH given the following: a 0.08 M stock solution of NaOH; 2, 5, 10 mL pipettes; 10, 20,...
How many milligrams of glucose would you use to make 5 ml of a 300 mM...
How many milligrams of glucose would you use to make 5 ml of a
300 mM glucose solution? Show your calculations...Please work this
out on loose leaf
4. How many milligrams (mg of glucose would you use to make 5 ml of a 300 mM glucose solution? Show your calculations. Answer
You are instrucbed to create 900. mL of a 0.59 M phosphate buffer with a pH of 6.4. You have phosphoric acid and the sodium salts NaH2PO4, Na2HPO4, and Na3PO4 available. numerical answers to three significant H3PO4(s)H20)H3 aH2PO4(aq) H2PO4-(aq) + H2O(りーH3O + (aq) + HP042-(aq) Ka2-6.2×10-8 HPO()H20()H3)PO43 (aq) Ka 4.8x10-13 Ka 6.9x10-2 Which of the available chemicals will you use for the acid component of your buffer? O H3PO4 O Na2HPO Na3PO4 Which of the available chemicals will you use...
please define a formula unit in your explanation. What does
3.3 *10^24 forumla units of silver phosphate mean? I know that a
formula unit is the ratio of the ions in an ionic compound but how
ido you apply 3.3*10^24?
2. Use the information in the answers you obtained in question number one as necessary to answer the following questions. a. Determine the number of moles in 3.3 x 10-4 formula units of silver phosphate. b. Determine the mass of...
8. Describe briefly how you would prepare, with a minimum number of dilutions, a 1x 10 Msolution of NaOH given the following: a 0.08 M stock solution of NaOH; 2, 5, 10 mL pipettes; 10, 20, 50, 100 mL volumetric flasks. (Show your working)
8. Describe briefly how you would prepare, with a minimum number of dilutions, a 1x 10 Msolution of NaOH given the following: a 0.08 M stock solution of NaOH; 2, 5, 10 mL pipettes; 10, 20,...
How many milligrams of glucose would you use to make 5 ml of a
300 mM glucose solution? Show your calculations...Please work this
out on loose leaf
4. How many milligrams (mg of glucose would you use to make 5 ml of a 300 mM glucose solution? Show your calculations. Answer
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago