Guest guest Posted September 26, 2002 Report Share Posted September 26, 2002 Dear Pharmacytech girl and Dora, I agree that the problem probably has two words left out. " How many grams of an ointment that is 10% will deliver 6 grams of the same ointment? " I think the questions should be: How many grams of a 10% ointment will deliver 6 grams of " active ingredients " of the same ointment? 10 grams active ingredient 10% = _______________________ 100 grams of ointment (Total Ingredients) 6 grams of ointment instead of 100 grams 10 grams of AI 6 grams of AI _____________ = _________________ 100 grams TI oint X grams of TI oint 100 x 6 ______ = 60 grams 10 Therefore if 100grams of a 10% ointment will deliver 10grams of active ingredient to treat a medical condition, then 60 grams of a 10% ointment will deliver 6 grams of active ingredient. Of course one could use 100 grams of a 6% ointment to get 6 grams of active ingredients also. Since 6 grams 6% = _______________ 100 grams of ointment Total ingredients Therefore one could say that 6 grams of a 6% ointment A will deliver the same amount of active ingredient as 60 grams of a 10% ointment A. I hope that this helps. Respectfully Jeanetta Mastron CPhT BSChemistry Founder and owner of this site > > How many grams of an ointment that is 10% will deliver 6 grams of > the > > same ointment? Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 26, 2002 Report Share Posted September 26, 2002 As you can see the ratio proportion method does not copy well. I will place this on a Discussion Tutorial tonight for better understanding. Jeanetta > > > How many grams of an ointment that is 10% will deliver 6 grams of > > the > > > same ointment? Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 30, 2002 Report Share Posted September 30, 2002 How many 500mg doses can be prepared from a 10g vial of cefazolin? Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 30, 2002 Report Share Posted September 30, 2002 Dear Pharmacy Tech girl, This is a ratio proportion problem. 500 mg 10 gram ------ = --------- 1 dose X doses 1gram = 1000mg therefore 10 gram = 10 x 1000 = 10,000mg 500mg 10,000 mg -------- = ---------- 1 dose X doses 1 x 10,000 ----------- = 20 doses 500 Check out my tutorials on the ratio/proportion math and conversions. Hope this helps! Respectfully, Jeanetta Mastron Owner/Founder > How many 500mg doses can be prepared from a 10g vial of cefazolin? Quote Link to comment Share on other sites More sharing options...
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