Hi, I have a question. Can you show me a solution of this? Thank you. How many mL of water should be added tp 1:125 w/v to make a solution such that 25 mL dissolved in 100mL yields a 1:4000 dilution?
from the first question, using the algebraic method towards the final step. you divided both sides by 20 first. why did you not chose to divide both sides by 5 initially
Thank you Tinubu for watching and for the comment. You certainly could initially divide both sides by 5. That is also an elegant way to solve the question. Happy studying.
Dear sir, can you explain this calculation for me? If 500ml of a 15%v/v solution are diluted to 1500ml, what will be the percentage strength (v/v)? Tnx
BACTROBAN ointment contains 2% mupirocin. How many grams of a polyethylene glycol ointment base must be mixed with the contents of a 22-g tube of the BACTROBAN ointment to prepare one having a concentration of 5mg/g ?
A pharmacist receives an order or 60 mL o an oral solution containing memantine hydrochloride (N AMEN DA) 1.5 mg/mL. She has on hand a 360-mL bottle o oral solution containing memantine hydrochloride, 10 mg/5 mL, and a diluent o sorbitol solution. How many milliliters each o the available oral solution and sorbitol solution may be used to ill the order? how to answer this?
I have a bottle of DMSO ( 50 ml) that has 55% concentration. I’m adding it to a 65 ml of stem cells to obtain a final concentration of 10%. How much should I add ( in ml) from the bottle of DMSO ( 55% concentrated) to make the final concentration 10% ?
C3V3=C1V1+C2V2, C3=0.001 C1=0.005 C2= 0.0005 I don´t know the volume to take of the stocks but i will say V1=X but i know that the VT=60mL mmmm V2=60-X sustitute in the equation 0.001*60=(0.005*X) + 0.0005*(60-X), 0.06=0.005X+ 0.03-0.0005X, this is the same 0.06-0.03=X(0.005-0.0005). 0.03=0.0045X, X=0.03/0.0045 X=6.666, V1=6.66666666. 60-6.666=53.33, V2=53.33 This is the same in porcentage. this formula is the same to preparate S.S 3%.
Thanks for the additional tips!
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Wow,,, very helpful,,,,Thanks
Glad you found the video helpful. Thank you for the comment and welcome to the pharmaceutical calculations community.
Thanks and may Our Lord bless you with wisdom and more everlasting life.
Thank you Anesipho for watching and for the comment.
This is helpful 🥰very, very, and on point 👉
You did a great job sir
Thank you Obukohwo for watching and for your kind comment.
THANK YOU SO MUCH ......
You're welcome Bikram! Thank you for watching and for the comment.
these are very helpful thank you
You are welcome. Glad you like the videos. Thank you for watching and for the comment.
Thank you!
You're welcome Sunshine! Thank you for watching and for the comment.
Hi, I have a question. Can you show me a solution of this? Thank you.
How many mL of water should be added tp 1:125 w/v to make a solution such that 25 mL dissolved in 100mL yields a 1:4000 dilution?
from the first question, using the algebraic method towards the final step. you divided both sides by 20 first. why did you not chose to divide both sides by 5 initially
Thank you Tinubu for watching and for the comment. You certainly could initially divide both sides by 5. That is also an elegant way to solve the question. Happy studying.
Dear sir, can you explain this calculation for me?
If 500ml of a 15%v/v solution are diluted to 1500ml, what will be the percentage strength (v/v)? Tnx
BACTROBAN ointment contains 2% mupirocin. How many grams of a polyethylene glycol ointment base must be mixed with the contents of a 22-g tube of the BACTROBAN ointment to prepare one having a concentration of 5mg/g ?
A pharmacist receives an order or 60 mL o an oral solution containing memantine hydrochloride (N AMEN DA) 1.5 mg/mL. She has on hand a 360-mL bottle
o oral solution containing memantine hydrochloride, 10 mg/5 mL, and a diluent
o sorbitol solution. How many milliliters each o the available oral solution and
sorbitol solution may be used to ill the order? how to answer this?
Here is the solution to the question jo.my/fboufv . Thank you Shaira for watching and welcome to the community.
I have a bottle of DMSO ( 50 ml) that has 55% concentration. I’m adding it to a 65 ml of stem cells to obtain a final concentration of 10%. How much should I add ( in ml) from the bottle of DMSO ( 55% concentrated) to make the final concentration 10% ?
Thank you Kelvin for watching and for the question. Kindly find the answer here: jo.my/amaopi.
C3V3=C1V1+C2V2, C3=0.001 C1=0.005 C2= 0.0005 I don´t know the volume to take of the stocks but i will say V1=X but i know that the VT=60mL mmmm V2=60-X sustitute in the equation 0.001*60=(0.005*X) + 0.0005*(60-X), 0.06=0.005X+ 0.03-0.0005X, this is the same 0.06-0.03=X(0.005-0.0005). 0.03=0.0045X, X=0.03/0.0045 X=6.666, V1=6.66666666. 60-6.666=53.33, V2=53.33 This is the same in porcentage. this formula is the same to preparate S.S 3%.
I am from an Arab country and I am facing difficulty because I do not understand the language. Can you offer the translation?
Thank you for watching and for the comment. We will look into offering subtitle translation in Arabic. Happy studying.
Are you Nigerian? Or west African in general?