This is the best channel for calculations. Am having by pharmacy board exam on Thursday and truly grateful for this helpful channel. Thank you Dr. Love from Namibia ❤️
This channel is very helpful. What if you prepared 15 mL of a dedicated ophthalmic solution containing 15 mg of drug X. Calculate the percentage strength (w/v) of drug X.
Thank you Nikki for watching and for your kind comment. Regarding your question, glycerin is a liquid in the formula. Hence, the concentration is percentage volume-in-volume (%v/v) and not percentage weight-in-volume. That is why the 12% is expressed as 12 mL/100 mL. Hope this helps.
You are asked to prepare 6 Theobroma oil suppositories (2g mould) each containing 10% w/w of zinc oxide. What is the total weight of the base required for the 6 suppositories? Disp value= 4.7
This is great and I learned a lot But I have a question In the sample problem Glycerin and resorcinol where did the 30 mL came from?? THANK YOU SO MUCHHH!!
Thank you Lovea for watching and for the comment. The 30 mL is the conversion factor used to convert the fl. oz to milliliters. 1 fl. oz is actually equal to 29.5735297 milliliters, however, 1 fl. oz = 30 mL is commonly used to convert fl. oz to milliliters as it is easy to remember. Hope this helps.
Hello! I've been using your method and I felt likey the book and your methods don't seem to interact most of the time. My book gives different processes and I have been answering this one question for an hour using yours and the books. If 100 ml of pharmaceutical preparation contains 20mcg of a 50℅ w/v solution of benzalkonium chloride, what is the percent strength of that agent in the solution? It will help a lot of you help me. I'm a 1st year pharmacy student. And I have been beating my self up and calling myself dumb just because I could't answer this question Thank you in advance
Thank you Belle for watching and for the comment. If the question is asking about 20 mcg of the 50℅ w/v solution of benzalkonium chloride, then you have to use density to find the volume of solution represented by the 20 mcg. Density of 50℅ w/v solution of benzalkonium chloride is approximately 0.98 g/ml. Hence the volume represented by 20 mcg will be 0.02g /0.98 g/ml which is 0.0204 ml so approximately 0.02ml. Now, 50% implies 50 g in 100 ml. Hence the 0.02ml will contain ((0.02ml x 50g)/100ml) = 0.01g. Since, 0.01g is present in the 100 ml preparation, then the percentage strength is 0.01% w/v. Hope this helps.
@@PharmaceuticalCalculationsEasy Hello! Thank you! I appreciate your help so much. I answered it last night after thoroughly analyzing the problem. I am inspired by your work. Thank you. I highly appreciate you
@@PharmaceuticalCalculationsEasy Good Day Dr! There is some slight error in the question that is not 20 mcg. It is 20 mcl. I hope you will notice me again. You have helped a lot 🤧
I'm stuck on this problem. What if Multitrace-5 Concentrate contains 0.01 mg chromium per milliliter. What is the percentage strength (w/v) of chromium in this formulation?
Hello professor I have a questions for you I couldn't find similar to themes in your precious videos Thr questions is What is the volume of lactic acid 89% w/w, we should use to prepare 500 ml of a solution of 30% w/v, (the densityof the solution of 89% :1.212)? I have big list in frech language, wish to send to you . Thank you greatly in advance if you have a video treating such questions, or solving these kind of problems
Thank you Prisyosa for watching and for the comment. Solutions are typically weight by volume so we will need the volume of the solution that needs to be prepared. We can determine the volume using the mass in the question if we know the density. However, the density is not provided. Please clarify whether the quantity to be prepared is 240 g or 240 mL or some unit of volume.
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This is the best channel for calculations. Am having by pharmacy board exam on Thursday and truly grateful for this helpful channel. Thank you Dr. Love from Namibia ❤️
Thank you for watching and for the kind comment. Welcome to the Pharmaceutical Calculations community.
thank u now am perform well in calculation
This channel is very helpful. What if you prepared 15 mL of a dedicated ophthalmic solution containing 15 mg of drug X. Calculate the percentage strength (w/v) of drug X.
Sir thanks for teaching in easy way
Thank Adnan for watching and for the kind comment.
THANK YOU SIR YOUR EXPLAINATION WAS GOOD AND CLEAR
Thank you Frank for watching and for the comment.
I really love to watch your video it helps me thank you ⚘⚘⚘
Glad you like the video Jihan. Thank you for watching and for being an active member of the pharmaceutical calculations community.
this helped me a lot thank you!
Glad you found the video helpful Muhlthaler. Thank you for watching and for the comment.
You are a great teacher thanks you've saved me
Thank you Phyllis for watching and for the kind comment. Happy studying.
You are a great teacher. I love these videos. I do have 1 question tho. In the glycerin problem, why did you change 12g to 12ml?
Thank you Nikki for watching and for your kind comment. Regarding your question, glycerin is a liquid in the formula. Hence, the concentration is percentage volume-in-volume (%v/v) and not percentage weight-in-volume. That is why the 12% is expressed as 12 mL/100 mL. Hope this helps.
Finally!! Thankyou so much for this video.
Thank you Ma. Mieca for watching and for the comment. Welcome to the pharmaceutical calculations community.
@@PharmaceuticalCalculationsEasy Thankyou so much 💖
God bless sir
Thx for the lecture sir godbless ✊🏻✊🏻
Thank you Jude for watching and for the kind comment.
thank u for your help
Thank you Said Khamis Talib for watching and the comment.
Thank you so much sir, it really helped me.
Glad you found the video helpful Namasiku. Thank you for watching and for the comment.
You are asked to prepare 6 Theobroma oil suppositories (2g mould) each containing 10% w/w of zinc oxide. What is the total weight of the base required for the 6 suppositories? Disp value= 4.7
Thank you for the video very informative
So nice of you Philip. Thank you for watching and continuously supporting the channel. Hope you got the solution to your last question.
@@PharmaceuticalCalculationsEasy Yes I got it ! Thank you very much
Thank you
You're welcome Mr. Gard Bin senta. Thank you for watching and for the comment.
This is great and I learned a lot But I have a question In the sample problem Glycerin and resorcinol where did the 30 mL came from?? THANK YOU SO MUCHHH!!
Thank you Lovea for watching and for the comment. The 30 mL is the conversion factor used to convert the fl. oz to milliliters. 1 fl. oz is actually equal to 29.5735297 milliliters, however, 1 fl. oz = 30 mL is commonly used to convert fl. oz to milliliters as it is easy to remember. Hope this helps.
What if I prepared 15 mL of a medicated ophthalmic solution containing 12 mg of drug X. Calculate the percentage strength (w/v) of drug X.
Hello! I've been using your method and I felt likey the book and your methods don't seem to interact most of the time. My book gives different processes and I have been answering this one question for an hour using yours and the books.
If 100 ml of pharmaceutical preparation contains 20mcg of a 50℅ w/v solution of benzalkonium chloride, what is the percent strength of that agent in the solution?
It will help a lot of you help me. I'm a 1st year pharmacy student. And I have been beating my self up and calling myself dumb just because I could't answer this question
Thank you in advance
Thank you Belle for watching and for the comment. If the question is asking about 20 mcg of the 50℅ w/v solution of benzalkonium chloride, then you have to use density to find the volume of solution represented by the 20 mcg. Density of 50℅ w/v solution of benzalkonium chloride is approximately 0.98 g/ml. Hence the volume represented by 20 mcg will be 0.02g /0.98 g/ml which is 0.0204 ml so approximately 0.02ml. Now, 50% implies 50 g in 100 ml. Hence the 0.02ml will contain ((0.02ml x 50g)/100ml) = 0.01g. Since, 0.01g is present in the 100 ml preparation, then the percentage strength is 0.01% w/v. Hope this helps.
@@PharmaceuticalCalculationsEasy Hello! Thank you! I appreciate your help so much. I answered it last night after thoroughly analyzing the problem. I am inspired by your work. Thank you. I highly appreciate you
@@PharmaceuticalCalculationsEasy Good Day Dr! There is some slight error in the question that is not 20 mcg. It is 20 mcl. I hope you will notice me again. You have helped a lot 🤧
How many grams of zinc chloride should be used in preparation 5 litres of mouth wash contains 1/10 percent weight in volume of zinc chloride?
I'm stuck on this problem. What if Multitrace-5 Concentrate contains 0.01 mg chromium per milliliter. What is the percentage strength (w/v) of chromium in this formulation?
what is the % (w/v) of boric acid solution if 45.4 grains is contained in 8 fluidounce?
Thank you!
Thank you Shane for watching and for your comment. Please see the solution to your question here: jo.my/hn9kpz.
@@PharmaceuticalCalculationsEasy thank you so much for your response , I'm looking forward for more videos that I can use for my study.😁
If you answer lwil be greatfull thanks
Hello professor
I have a questions for you I couldn't find similar to themes in your precious videos
Thr questions is
What is the volume of lactic acid 89% w/w, we should use to prepare 500 ml of a solution of 30% w/v, (the densityof the solution of 89% :1.212)?
I have big list in frech language, wish to send to you .
Thank you greatly in advance if you have a video treating such questions, or solving these kind of problems
Hello Ahmad:
Thank you for watching and for the comment. Please see the solution here: jo.my/warwqn.
How many grams of a drug should be used to prepare 240g of a 5% solution
Thank you Prisyosa for watching and for the comment. Solutions are typically weight by volume so we will need the volume of the solution that needs to be prepared. We can determine the volume using the mass in the question if we know the density. However, the density is not provided. Please clarify whether the quantity to be prepared is 240 g or 240 mL or some unit of volume.
❤❤❤
Thanks for the love, @Gllole! ❤️ Really appreciate your support!
Is he teaching according to howard Ansel 13 th edition?
pls qn 3
The 2.5 com from where!!!!?
I havent understood the question
this was really helpful thank you sir
Glad you found the video helpful Eshani. Thank you for watching and for the comment.