NEED HELP with MATH CALCULATIONS 
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Juan Rodriguez in Tijuana, Mexico 35 months ago 
I have a 20% solution and want to dilute it to 0.02% solution. I need 10mL of 0.02% solution. 
mirandalrose in Seminole, Oklahoma 35 months ago 
A physician writes an order for a patient to receive KCl 40 mEq/1 L NS @ 80 ml/hr. What amount of KCl will the patient receive per hour? 
Rak in Mendham, New Jersey 35 months ago 
mirandalrose in Seminole, Oklahoma said: A physician writes an order for a patient to receive KCl 40 mEq/1 L NS @ 80 ml/ hr . What amount of KCl will the patient receive per hour? Snce KCL is administered 80 ml in 1 hr hence for 1 l i.e 1000 ml will be given every 12.5 hrs 40 mEq = 12.5 hrs

keshia in Richmond, Virginia 29 months ago 
Plz help with solving this problem: Calculate the flow rate in drops per minute if a physician orders DSW/NS 1,0000ml over 12 hours, with an administration set that delivers 16 gtt/ml 
kelly456 in Austin, Texas 28 months ago 
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kelly456 in Boston, Massachusetts 28 months ago 
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Stephen Se in Charlton, Massachusetts 26 months ago 
This is a dilution problem, (Q1*C1 = Qf*Cf). Let's convert the measurements to friendly appearances: 0.5 L = 500 mL, 1:5000 = 0.02%, 1:1000 = 0.10%; Q1*(0.10%) = (500 mL)*(0.02%), Q1 = 100 mL; Qf = Qh2o + Q1, (500 mL) = Qh2o + (100 mL), Qh2o = 400 mL. You need 100 milliliters of the stock solution with 400 milliliters of sterile water to make half a liter of 0.02% epinephrine solution. 
Stephen Se in Charlton, Massachusetts 26 months ago 
keshia in Richmond, Virginia said: Plz help with solving this problem: Flow Rate = (total volume per hour)*(administration set)*(unit conversion to minutes), F.R.=(1,000mL/12hr)*(16gtts/1mL)*(1hr/60min)=22.2gtts/mL, 23 drops per minute 
Stephen Se in Charlton, Massachusetts 26 months ago 
Jayb1 in Merced, California said: How many grams of 1 hydrocortisone cream should be mixed with 30g of 2.5% hydrocortisone cream to make 2% hydrocortisone cream This is a mixture problem which can also be solved using alligation. Let's solve it first by using the mixture formula, m1*c1+m2*c2=mf*cf with mf=m1+m2, m1*(1.0%)+(30g)*(2.5%)=mf*(2.0%), mf=m1+(30g). We have two equations and two unknowns. Removing all the percentages and solving by substitution, m1*1+75g=m1*2+60g, m1=15g, mf=30g+15g=45g. We need 15 grams of the 1.0% hydrocortisone cream. Alligation: 1.0% is the lower strength, 2.5% is the higher strength, 2.0% is the desire strength. Place 2.5% in the upper left hand corner of our alligation grid, 1.0% in the lower left corner and 2.0% in the middle. The difference between the desire and lower is 1 part which goes into the upper right hand corner of the grid. The difference between the desire and higher is 0.5 part which goes in the lower right hand corner of the grid. The total parts for the desire strength is the sum of the higher part and the lower part, 1 and 0.5, respectively. Use proportion to find the weights of the lower strength, 0.5:1::X:30g, X=15g. We need 15g of the 1.0% strength hydrocortisone. 
Stephen Se in Charlton, Massachusetts 26 months ago 
donna in Jonesborough, Tennessee said: I need help with this problem. Use proportion to find the percentage of gentian violet in the 1:10,000 solution. 1:10,000::X:100mL, X=0.01, there are 0.01% of gentian violet in the solution. 100mL of a 0.01% solution is the same as 100mL*(0.01g/100mL) which equals to 0.01g or 10 mg. You need 10 mg of gentian violet to prepare a 100mL solution with concentration ratio of 1:10,000 or a 0.01% percent concentration. 
Stephen Se in Charlton, Massachusetts 26 months ago 
samuel Boucher in Chandler, Arizona said: I am trying to figure this problem. I have to dilute 1g of powder to 330 mg/ml and give a 600 mg dose. I need to know how much diltent to add, how much to withdraw and what size syringe to use. I have never used or do I have a needle to know what size. I can problaby figure out the diluent to add 0.330g:1mL::X:100mL, X=33g, there is 33 grams of the powder in a 330mg/mL concentration. 1g:Y::33g:100mL, Y=3.03mL, you need 3.03 mL of diluent to dissolve the 1 gram powder. (1mL/330mg)*(600mg/dose)=1.8mL per dose, you need to draw out 1.8 milliliters of the diluted solution. 
Stephen Se in Charlton, Massachusetts 26 months ago 
rt in Portofspain, Trinidad and Tobago said: how many grams of yellow mercuric oxide must be added to 30g of 1% yellow mercuric oxide ointment to prepare a 5% ointment. 100% 4
4:95::X:30g, X=1.26g, you need 1.26 grams of yellow mercuric oxide. 
Stephen Se in Charlton, Massachusetts 26 months ago 
Brooke in Gallatin, Missouri said: i need help solving this problem...i dont even know how to set it up..if someone could please explain how i get this answer that would be wonderful..thanks 150mL of 3% is equal to 150mL*(3g/100mL) which is equal to 4.5g, you need 4.5 grams of metronidazole to compound the suspension. 4.5g*(tab/0.5g)=9tab, you need nine 500mg tablets. 
Stephen Se in Charlton, Massachusetts 26 months ago 
koolrvr31 in Wichita, Kansas said: PLEASE HELP Divide the 50gelcaps formula by 5 for 10gelcaps, (0.6:2:0.25)/5 equals 0.12:0.4:0.05, 0.12g of caffeine, 0.4g of aspirin, 0.05g of inerts 
Stephen Se in Charlton, Massachusetts 26 months ago 
koolrvr31 in Wichita, Kansas said: Also, I know this is an aligation problem and thought I understand how to plug the numbers, but its not working out It's not an alligation problem, the ingredients are not similar in type. Caffeine is not the same as aspirin nor is it an inert ingredient. Use alligations when you have the same ingredients but at different strengths. This is a proportional problem. Use proportions to solve ingredients problems containing three or more components in a mixture. 
Stephen Se in Charlton, Massachusetts 26 months ago 
Juan Rodriguez in Tijuana, Mexico said: I have a 20% solution and want to dilute it to 0.02% solution. I need 10mL of 0.02% solution. Q1*C1=Qf*Cf, Q1*(20%)=(10mL)*(0.02%), Q1= 0.01mL, you need 0.01 milliliters of the stock solution. 
Stephen Se in Charlton, Massachusetts 26 months ago 
Linda Thompson in Tyler, Texas said: I really need help solving this problem and show me the formula on how you get the answer 1% of salicyclic acid is equal to 1 gram of salicyclic acid in 100 grams of cream, 1%=(1g/100g). Using proportion, 1g:100g::X:240g, X=2.4g, you need 2.4 grams of salicyclic acid in the 240 gram cream. 
Stephen Se in Charlton, Massachusetts 26 months ago 
DORIS SANTAN in Los Angeles, California said: I NEED HELP PLZ SOMEONE!!! F.R.=(1000mL/24hr)*(60gtts/mL)*(hr/60min)=41.7 gtts/min, you have a flow rate of 42 drops per minute. 
Stephen Se in Charlton, Massachusetts 26 months ago 
DORIS SANTANA in Los Angeles, California said: HOW DO I WORK IN THIS PROBLEM WITH A FRACTION 31.25 gtts/min = 32 drops per minutes 
Stephen Se in Charlton, Massachusetts 26 months ago 
Nohemi contreras in Santa Monica, California said: order: penicillin 400,000 U IM q,3h No, it's 1.6 mL 
Stephen Se in Charlton, Massachusetts 26 months ago 
elizabeth thompson in Sumter, South Carolina said: prepare 220mg of digoxin in using the stock concentration of 80mg/4ml 11mL 
Stephen Se in Charlton, Massachusetts 26 months ago 
sharon in Deerfield Beach, Florida said: A physician ordered 600.000 U penicillin PO q6h. The available drug is 400.000 U per scored tablet. How many tablets you will administer. 1.5 tablet PO q6h 
Stephen Se in Charlton, Massachusetts 26 months ago 
Keri said: if 750 ml of a 2% solutionis diluted by 40% of its volume, what is the new concentration in mg/ml? 14.3 mg/mL 
CG in Saint Charles, Missouri 24 months ago 
I always have problems with calculating how many prednisone to give to a patient. For instance: The patient has a prescription for 10 mg and the doctor starts them off with 40mg QD x2 days; 30mg QD x3 days; 20mg QD x4 days; and 10mg QD x5 days. Please help. Thanks! 
Msz_ladi3 19 months ago 
In school fr CphT need help with this math, not understanding how to get the answer. Please help?
2. Amox 0.25grams/fluid dram 130mg po tid x10 days
Im not understanding how to get the answers its a really fast paced class someone please help? 
Joe Medina, CPhT, BS Pharmacy in Denver, Colorado 19 months ago 
Msz_ladi3 said: In school fr CphT need help with this math, not understanding how to get the answer. Please help? 
pss in Needham Heights, Massachusetts 17 months ago 
DORIS SANTAN in Los Angeles, California said: I NEED HELP PLZ SOMEONE!!! 1,200gtt/min 
kim5 in Hampton, Virginia 17 months ago 
hi im trying to calculate the flow rate for Iv of 0.6L of Lactated ringers solution in 24hrs if the drop factor for tubing is 12gtts/ml. (Hint) Make sure your equation includes conversion factors for volume and time so that the answer is in gtt/min Please help me asap, thanks 
kim5 in Hampton, Virginia 17 months ago 
also, an Iv infusion order is written for 0.3L of D5W/).45% NS to run 12hrs. The drop factor for the Iv is set 12gtt/mL. What is the flow rate in drops per min.(using the same hint) 
kia in San Antonio, Texas 12 months ago 
i need help soliving several problems but ill post them one by one. a 1:10 solution contains____G of active ingredient and ____mL of product and 1000 mL of that solution contains_____G 
kia in San Antonio, Texas 12 months ago 
how many grams of amoxicillin are in the bottle? the label shows 250mg per 5mL at the bottom its shows 150 mL bottle i know 1g=1000mg i can use that to get rid of the mg....but i need to get rid of the Ml 
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