Salicylic acid and sulfur cream APF contains 2 %w/w salicylic acid and 2% sulfur in Aqueous...
Salicylic acid and sulfur cream APF contains 2 %w/w salicylic acid and 2% sulfur in Aqueous cream. You require a cream with 1.4 % salicylic acid. How many g of Aqueous cream would you need to add to 130 g of Salicylic acid and sulfur cream APF to make a cream containing 1.4 % salicylic acid? (2 decimal places)
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Salicylic acid and sulfur cream APF contains 2 %w/w salicylic
acid and 2% sulfur in Aqueous...
Question 2 Salicylic acid, HC,H,0, is a chemical compound used in many facial cleansing products. Figure 2. Stru...
Question 2 Salicylic acid, HC,H,0, is a chemical compound used in many facial cleansing products. Figure 2. Structure of Salicylic Acid a) Identify the ionizable hydrogen (HA or Hg) with the correct pk НА lonizable Hydrogen pK, 2.97 HA 13.7 :91 3 19- 10 b) The solubility of salicylic acid in water is 0.210-96 HC,HsOs by mass. What is the pH of an aqueous solution of salicylic acid at saturation? (Assume the density of the solution is 1.00 g/mL). 2-U...
Just answer and work for questions D and E please. The answer for c is 27.3 grams c) A certain dermatological facial cream (16.0 f. oz, density , 0.960 g/mL) contains 6.00-% HC,H503 by mass. How m...
Just answer and work for questions D and E
please.
The answer for c is 27.3 grams
c) A certain dermatological facial cream (16.0 f. oz, density , 0.960 g/mL) contains 6.00-% HC,H503 by mass. How many grams of HCH,o, are contained in the facial cream? grams of HC,H,O, d) Construct a heat curve diagram for salicylic acid on the graph below. Include labels (and units) for the x-axis, y-axis, melting point, boiling point, ΔΗ,us, and AH,op. Heat Curve Diagram...
How many grams of salicylic acid (active ingredient) should be added to 30 g of a...
How many grams of salicylic acid (active ingredient) should be added to 30 g of a 2% salicylic acid ointment to make a 5% ointment? How is this worked out? Answer should be 0.94
Experiment 2: Synthesis of Aspirin (Acetylsalicylic Acid ) 1. How many moles of salicylic acid are...
Experiment 2: Synthesis of Aspirin (Acetylsalicylic Acid ) 1. How many moles of salicylic acid are there in 1.0 grams of salicylic acid? 2. How many moles of acetic anhydride are there in 3 mL of acetic anhydride? 3. When 1.0g of salicylic acid and 3 mL of acetic anhydride react, DETERMINE which one is the limiting reactant (you can go to General Chemistry if you need help about limiting reagent)? 4. What is phosphoric acid used for in the...
Please show all steps. 17. Essay (20 pts) How many grams of salicylic acid (Mr =...
Please show all steps.
17. Essay (20 pts) How many grams of salicylic acid (Mr = 138 g/mol) and sodium salicylate (Mr = 160 g/mol) would you need to generate a 350 mM buffer system in 750 mL of water at pH 3.80? The pKa of salicylic acid is 2.97. What would be the new pH if you titrated this system with 25 mL of 0.1 M HCI?
4. Aspirin (C,H,O,) is produced via reaction of salicylic acid (CyH603) with acetic anhydride (C H603),...
4. Aspirin (C,H,O,) is produced via reaction of salicylic acid (CyH603) with acetic anhydride (C H603), according to the following chemical equation: CyH603() + C4H603(1)→ CH904() + HC2H302(aq) If you wanted to prepare 500.6 g of aspirin, how many grams of salicylic acid would you need to react?
You make 1,000 L of an aqueous solution that contains 35.0 g of sucrose (C12H22011). (a)...
You make 1,000 L of an aqueous solution that contains 35.0 g of sucrose (C12H22011). (a) What is the molarity of sucrose in this solution? (b) How many liters of water would you have to add to this solution to reduce the molarity you calculated in part (a) by a factor of two?
Commercially available aqueous solutions of glucose (C6H12O6) are typically labeled as having a concentration of 5%(w/v)....
Commercially available aqueous solutions of glucose (C6H12O6) are typically labeled as having a concentration of 5%(w/v). This means that a 100 mL sample of the solution contains 5 g of C6H12O6. a. How many moles of glucose are in a 4.16 mL sample of a 5%(w/v) solution? Hint: first calculate the mass of glucose in the 4.16 mL sample given that a 100 mL sample contains 5 g of glucose; then convert mass to grams. NG 2 b. If you...
1) Which reactant, salicylic acid or acetic anhydride, is in excess? Show your work. 2) If you we...
1) Which reactant, salicylic acid or acetic anhydride, is in
excess? Show your work.
2) If you were to use 3.17 g of starting material, how much
product would you expect? Again, show your work.
3) Why is phosphoric acid added to the reaction?
4) A small amount of water is added at the end of the reaction
to react with the excess acetic anhydride. Show a balanced equation
for that reaction.
5) Explain the purpose of the FeCl3 test...
You make 1L of an aqueous solution that contains 35g of fructose (C6H12O6). A. What is...
You make 1L of an aqueous solution that contains 35g of fructose (C6H12O6). A. What is the molarity of fructose in this solution? B. How many litres of water would you have to add to this solution to reduce the molarity you calculated in Part A by a factor of two?
Question 2 Salicylic acid, HC,H,0, is a chemical compound used in many facial cleansing products. Figure 2. Structure of Salicylic Acid a) Identify the ionizable hydrogen (HA or Hg) with the correct pk НА lonizable Hydrogen pK, 2.97 HA 13.7 :91 3 19- 10 b) The solubility of salicylic acid in water is 0.210-96 HC,HsOs by mass. What is the pH of an aqueous solution of salicylic acid at saturation? (Assume the density of the solution is 1.00 g/mL). 2-U...
Just answer and work for questions D and E
please.
The answer for c is 27.3 grams
c) A certain dermatological facial cream (16.0 f. oz, density , 0.960 g/mL) contains 6.00-% HC,H503 by mass. How many grams of HCH,o, are contained in the facial cream? grams of HC,H,O, d) Construct a heat curve diagram for salicylic acid on the graph below. Include labels (and units) for the x-axis, y-axis, melting point, boiling point, ΔΗ,us, and AH,op. Heat Curve Diagram...
Please show all steps.
17. Essay (20 pts) How many grams of salicylic acid (Mr = 138 g/mol) and sodium salicylate (Mr = 160 g/mol) would you need to generate a 350 mM buffer system in 750 mL of water at pH 3.80? The pKa of salicylic acid is 2.97. What would be the new pH if you titrated this system with 25 mL of 0.1 M HCI?
4. Aspirin (C,H,O,) is produced via reaction of salicylic acid (CyH603) with acetic anhydride (C H603), according to the following chemical equation: CyH603() + C4H603(1)→ CH904() + HC2H302(aq) If you wanted to prepare 500.6 g of aspirin, how many grams of salicylic acid would you need to react?
You make 1,000 L of an aqueous solution that contains 35.0 g of sucrose (C12H22011). (a) What is the molarity of sucrose in this solution? (b) How many liters of water would you have to add to this solution to reduce the molarity you calculated in part (a) by a factor of two?
1) Which reactant, salicylic acid or acetic anhydride, is in
excess? Show your work.
2) If you were to use 3.17 g of starting material, how much
product would you expect? Again, show your work.
3) Why is phosphoric acid added to the reaction?
4) A small amount of water is added at the end of the reaction
to react with the excess acetic anhydride. Show a balanced equation
for that reaction.
5) Explain the purpose of the FeCl3 test...
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