Homework Answers
10 ml has 50,000 units of penicillin.
1 ml has 50,000/10 = 5000 units.
6 ml has 5000 X 6 = 30,000 units of penicillin.
24 grams of ointment is incorporated with 6 ml of penicillin solution which has 30,000 units of penicillin.
So, 24 gm ointment has 30,000 units
1 gram has 30,000/24 = 1,250 units.
Therefore, the ointment should be labelled as “ penicillin ointment 1,250 units per gram”.
Add Answer to:
1. A 50,000 unit soluble tablet of penicillin is dissolved in distilled water. A total volume...
A vitamin C (ascorbic acid) tablet was dissolved in approximately 50 mL of distilled water and...
A vitamin C (ascorbic acid) tablet was dissolved in approximately 50 mL of distilled water and titrated with the standardized NAOH solution. From the results of this titration, the mg of ascorbic acid in the tablet was calculated. Molecular formula of ascorbic acid: C6H806 Volume of NaOH required to neutralize ascorbic acid in Vitamin C tablet (mL) 14.47 Concentration of NaOH in mol/L, 0.1964 Calculate the amount of ascorbic acid in the Vitamin C tablet in (mg). Answer:
Sodium hydroxide is extremely soluble in water. At a certain temperature, a saturated solution contains 567...
Sodium hydroxide is extremely soluble in water. At a certain temperature, a saturated solution contains 567 g NaOH(s) per liter of solution. Calculate the molarity of this saturated NaOH(aq) solution. concentration: If 8.67 g of CuNO, is dissolved in water to make a 0.250 M solution, what is the volume of the solution in milliliters? volume: mL
5. What is the % w/v of a solution that has 250 mg of penicillin V...
5. What is the % w/v of a solution that has 250 mg of penicillin V dissolved in a total volume of 100 ml of distilled water ? 6. Using the formula CV=C1V1 given a total volume of 300ml of a 10% w/v of a bleach solution how many ml of this stock solution is need to make a 1.0% solution ? 7. A total of 125 ml of a 10% solution is diluted to...
Use the data below for questions 15-17: A commercial antacid tablet was dissolved in water and...
Use the data below for questions 15-17: A commercial antacid tablet was dissolved in water and a few drops of phenolphthalein were added, yielding a bright pink solution. Using a buret, 0.1974 M HCl was added until the pink color of the solution disappeared, and then 0.2208 M NaOH was added using a second buret until the solution turned light pink, which persisted for 30 seconds. Below is the data obtained for this experiment: initial buret volume reading of 0.1974...
Question 1 (1 point) A 52.30 g sample of Ba(OH)2 is dissolved in enough water to...
Question 1 (1 point) A 52.30 g sample of Ba(OH)2 is dissolved in enough water to make 1.20 L of solution. How many milliliters of this solution must be diluted with water in order to make 1.00 L of 0.100 M Ba(OH)2? 62.8 mL 254 mL O 305 ml O 523 mL O 393 mL O Question 2 (1 point) A chemist needs 225 mL of 2.3 M HCl. What volume of 12 M HCl must be dissolved in water...
Can you pleass show the work and explain? (1) How many grams of potassium chloride must be dissolved in 2.50 x 10^(2) m...
Can you pleass show the work and explain? (1) How many grams of potassium chloride must be dissolved in 2.50 x 10^(2) mL of water to make a 0.400 m solution? (2) How many milliliters of commercial hydrochloric acid, which is 11.6 molar, should you use to prepare 5.50 L of 0.500 molar hydrochloric acid? (3) Calculate the molarity of a NaOH solution prepared by mixing 100. mL of 0.20 M NaOH with 150 mL of H2O. (4) Calculate the...
Solution Worksheet Name 1.12.5 g of NaCl is dissolved in enough water to make 0,683 L...
Solution Worksheet Name 1.12.5 g of NaCl is dissolved in enough water to make 0,683 L of solution: a. What is the molarity of the solution? b. How many moles of Nail are contained in 0.0100 L of the above solution? What volume (L) of this NaCl solution would contain 0.150 moles of NaCl? 2. 255 g of NHCl is dissolved in enough water to make 7500 ml of solution What is the molarity of the solution b. How many...
5.75 g of LiCI is dissolved in enough water 0.970 L of solution. What is the...
5.75 g of LiCI is dissolved in enough water 0.970 L of solution. What is the molarity (M) of the solution? How many moles of LiCI are contained in 0 010 L of the above LiCI solution? Note: The concentration is the relationship between the amounts of solution. Use the concentration as a conversion facto!!! What volume (L) of this LiCI solution would contain 0.0078mole of LiCI? The mass of solute per 100 mL of solution is abbreviated as %(w/v)...
1. A 0.4187 g sample of a pure soluble chloride compound is dissolved in water, and...
1. A 0.4187 g sample of a pure soluble chloride compound is dissolved in water, and all of the chloride ion is precipitated as AgCl by the addition of an excess of silver nitrate. The mass of the resulting AgCl is found to be 0.9536 g. What is the mass percentage of chlorine in the original compound? ________% 2. A student determines the calcium content of a solution by first precipitating it as calcium hydroxide, and then decomposing the hydroxide...
19) If 4.89 g of ZnCl2 is dissolved in enough water to give a total volume...
19) If 4.89 g of ZnCl2 is dissolved in enough water to give a total volume of 500 ml, what is the molarity of the solution? A) 0.217 M Would you do B) 0.0179 M C) 0.0717 M all the questions D) 1.33 M E) 0.849 M Please . 20) What element is undergoing oxidation (if any) in the following reaction? 2 MnO4-(aq) + 3 NO2 (aq) + H20() ► 2 MnO2(s) + 3 NO3-(aq) + 2 OH-(aq) A) Mn...
A vitamin C (ascorbic acid) tablet was dissolved in approximately 50 mL of distilled water and titrated with the standardized NAOH solution. From the results of this titration, the mg of ascorbic acid in the tablet was calculated. Molecular formula of ascorbic acid: C6H806 Volume of NaOH required to neutralize ascorbic acid in Vitamin C tablet (mL) 14.47 Concentration of NaOH in mol/L, 0.1964 Calculate the amount of ascorbic acid in the Vitamin C tablet in (mg). Answer:
Sodium hydroxide is extremely soluble in water. At a certain temperature, a saturated solution contains 567 g NaOH(s) per liter of solution. Calculate the molarity of this saturated NaOH(aq) solution. concentration: If 8.67 g of CuNO, is dissolved in water to make a 0.250 M solution, what is the volume of the solution in milliliters? volume: mL
Use the data below for questions 15-17: A commercial antacid tablet was dissolved in water and a few drops of phenolphthalein were added, yielding a bright pink solution. Using a buret, 0.1974 M HCl was added until the pink color of the solution disappeared, and then 0.2208 M NaOH was added using a second buret until the solution turned light pink, which persisted for 30 seconds. Below is the data obtained for this experiment: initial buret volume reading of 0.1974...
Question 1 (1 point) A 52.30 g sample of Ba(OH)2 is dissolved in enough water to make 1.20 L of solution. How many milliliters of this solution must be diluted with water in order to make 1.00 L of 0.100 M Ba(OH)2? 62.8 mL 254 mL O 305 ml O 523 mL O 393 mL O Question 2 (1 point) A chemist needs 225 mL of 2.3 M HCl. What volume of 12 M HCl must be dissolved in water...
Solution Worksheet Name 1.12.5 g of NaCl is dissolved in enough water to make 0,683 L of solution: a. What is the molarity of the solution? b. How many moles of Nail are contained in 0.0100 L of the above solution? What volume (L) of this NaCl solution would contain 0.150 moles of NaCl? 2. 255 g of NHCl is dissolved in enough water to make 7500 ml of solution What is the molarity of the solution b. How many...
5.75 g of LiCI is dissolved in enough water 0.970 L of solution. What is the molarity (M) of the solution? How many moles of LiCI are contained in 0 010 L of the above LiCI solution? Note: The concentration is the relationship between the amounts of solution. Use the concentration as a conversion facto!!! What volume (L) of this LiCI solution would contain 0.0078mole of LiCI? The mass of solute per 100 mL of solution is abbreviated as %(w/v)...
19) If 4.89 g of ZnCl2 is dissolved in enough water to give a total volume of 500 ml, what is the molarity of the solution? A) 0.217 M Would you do B) 0.0179 M C) 0.0717 M all the questions D) 1.33 M E) 0.849 M Please . 20) What element is undergoing oxidation (if any) in the following reaction? 2 MnO4-(aq) + 3 NO2 (aq) + H20() ► 2 MnO2(s) + 3 NO3-(aq) + 2 OH-(aq) A) Mn...
Most questions answered within 3 hours.
-
Which statement is always true: The total energy of a closed
system...
A) is always equally...
asked 8 minutes ago -
find the critical value associated with a right sided hypothesis of
the mean using a sample...
asked 2 hours ago -
Which of the following statements is true with respect to a
simple linear regression model?
a....
asked 2 hours ago -
The energy required to remove an electron from a surface of a
solid element is called...
asked 4 hours ago -
How would you train your employees to avoid risks of using
mobile devices?
asked 4 hours ago -
Assume Kw = 1.01 ✕ 10−14
For pure water, we can calculate [H3O+ ] = [OH...
asked 5 hours ago -
Suppose that on a temperature scale X, water boils at 203.0°X
and freezes at -105.7°X. What...
asked 6 hours ago -
BaS crystallizes in a cubic unit cell with S2- ions on each
corner and each face....
asked 6 hours ago -
A. 0≤P(Oi)≤10≤P(Oi)≤1 for each i
B. P(Oi)≤0P(Oi)≤0
C. P(Oi)=1+P(OCi)P(Oi)=1+P(OiC)
D. P(Oi)≥1P(Oi)≥1
If an experiment consists of...
asked 8 hours ago -
A battery has an emf of 9.20V and an internal resistance of 1.20
ohm. a)What resistance...
asked 8 hours ago -
The area of an elastic circular loop decreases at a constant
rate, dA/dt = −6.60×10−3 m2/s...
asked 9 hours ago -
The denaturation of proteins can be described by the
equilibrium
F⇌U
where F and U represent...
asked 11 hours ago