cancan Posted June 7, 2006 Share Posted June 7, 2006 Using the formula for calamine lotion,determine the amount of calamine (in grms) necesary to prepare 240 ml lotion. calamine 80 g zinc oxide 80 g glycerin 20 ml bentonite magma 250 ml Calcium hydroxide topical solution,a sufficient quantity to make 1000 ml. Ans:19.2 g CPR ch2 ph21 5.edit. Thanks your help. Quote Link to comment Share on other sites More sharing options...
rainy_cloud Posted June 7, 2006 Share Posted June 7, 2006 since u have your total volume in the formula above is 1000 ml and it has 80 g calamine... 1000 ml........80 g 240 ml.......... ?? 240 * 80/1000 = 19.2 g Quote Link to comment Share on other sites More sharing options...
cancan Posted June 7, 2006 Author Share Posted June 7, 2006 Thank you so much for quick answer. I appropriated Rainy Cloud. Have you solved also Q.11 & 12.same ph?? Quote Link to comment Share on other sites More sharing options...
rainy_cloud Posted June 7, 2006 Share Posted June 7, 2006 For 11 total vol. is 10+100= 110 ml since these 10 ml contain 250 mg so you have now 110ml contain 250 mg which is 110/250= 0.44 ml/ 1 mg since the dose is 1 mg/ kg/hr so 40 pounds= 40/2.2 = 18.182 Kg so the dose is 18.182 kg* 0.44ml/ 1 ml * 1 mg/kg/hr = 8.0 ml/ hr For 12 since the child weight is 50 pounds which is 50/2.2= 22.727 kg we have the daily dose is 30 mg/ kg so for this child daily dose is =22.727 * 30 mg/kg= 681.818 mg since they asked at the lowest possible conc. from the table, the first one is what u use ,,, since 200 mg/ ml and we need 681.818 mg so 681.818/200 = 3.4 ml which is A Quote Link to comment Share on other sites More sharing options...
cancan Posted June 7, 2006 Author Share Posted June 7, 2006 It is not enougt to say thank you.Your explaination is amazing. What can i say?? Millionss times Thank you. Quote Link to comment Share on other sites More sharing options...
rainy_cloud Posted June 7, 2006 Share Posted June 7, 2006 You're more than welcome :tup: ,,,,,,,,,,, we need to support each other to get through this stressful exam,,,,,,,,,,, Quote Link to comment Share on other sites More sharing options...
dhang Posted June 7, 2006 Share Posted June 7, 2006 This question are from manan shroff book. 1. if 60 gm of elementary iron are present in 325 mg of ferrous sulfate what is the % of elementary iron? why the answer is 18.46%? 2. what is the solubility of silver chromate in moles/liter in an aqueous solution containing 0.08 M of silver nitrate? the solubility of silver chromate in water is 8 x 10-6 (KSP=2 x 10-12) a. 105.56 x 10-6 moles /liter b. 85.23 x 10-4 moles/liter c. 43.56x 10-12 moles/liter d. 312.5 x10-12 moles/liter 3. if a droplet of oleic acid is placed on water having a surface tension of 72.8 dynes/cm at 20C and an interfacial tension of 30 dynes/cm. Will the oleic spread on water? Surface tension of oleic acid at 20C= 35 dynes/cm. a.10.5 b.20.1 c.35.5 d.12.8 Quote Link to comment Share on other sites More sharing options...
fafy Posted June 7, 2006 Share Posted June 7, 2006 For Q1: 60 mg in 325 mg so in 100 mg you'll have (60*100)/325=18.46 mg so 18.46% Quote Link to comment Share on other sites More sharing options...
cancan Posted June 8, 2006 Author Share Posted June 8, 2006 Are they from Q&A book??? Quote Link to comment Share on other sites More sharing options...
pujitha Posted June 8, 2006 Share Posted June 8, 2006 hi rainy i was looking at the solution how did u get 250 its 25 mg/ml rite plz explain. thanks. For 11 total vol. is 10+100= 110 ml since these 10 ml contain 250 mg so you have now 110ml contain 250 mg which is 110/250= 0.44 ml/ 1 mg since the dose is 1 mg/ kg/hr so 40 pounds= 40/2.2 = 18.182 Kg so the dose is 18.182 kg* 0.44ml/ 1 ml * 1 mg/kg/hr = 8.0 ml/ hr For 12 since the child weight is 50 pounds which is 50/2.2= 22.727 kg we have the daily dose is 30 mg/ kg so for this child daily dose is =22.727 * 30 mg/kg= 681.818 mg since they asked at the lowest possible conc. from the table, the first one is what u use ,,, since 200 mg/ ml and we need 681.818 mg so 681.818/200 = 3.4 ml which is A Quote Link to comment Share on other sites More sharing options...
rainy_cloud Posted June 8, 2006 Share Posted June 8, 2006 because in the question it says that you give 10 ml that contan 25 mg/ml so u will have 250 mg in the 10 ml... Quote Link to comment Share on other sites More sharing options...
khadija Posted June 8, 2006 Share Posted June 8, 2006 because in the question it says that you give 10 ml that contan 25 mg/ml so u will have 250 mg in the 10 ml... rainy, You and some other members are a big blessing in this forum, I was just trying to solve the question11 in chap 2 in CPR I couldn't figure it out . So I left the question and was thinking to go back to it tonight ( now i don't have to). thank you very mutch god bless your test and all the FPGEE takers. I think that Manashroff calculation book has some mistakes especially in the excercice that tolke about Eq. Did you find any mistakes in this book For 11 total vol. is 10+100= 110 ml since these 10 ml contain 250 mg so you have now 110ml contain 250 mg which is 110/250= 0.44 ml/ 1 mg since the dose is 1 mg/ kg/hr so 40 pounds= 40/2.2 = 18.182 Kg so the dose is 18.182 kg* 0.44ml/ 1 ml * 1 mg/kg/hr = 8.0 ml/ hr For 12 since the child weight is 50 pounds which is 50/2.2= 22.727 kg we have the daily dose is 30 mg/ kg so for this child daily dose is =22.727 * 30 mg/kg= 681.818 mg since they asked at the lowest possible conc. from the table, the first one is what u use ,,, since 200 mg/ ml and we need 681.818 mg so 681.818/200 = 3.4 ml which is A Hi Rainy , this is me again :blush: i think that i didn't quit understand your answear for the Q11 you said 110ml contains 250mg till now i understood . then you said which is 110/250 how you get to this step, because in my understanding it should be 110ml.......250mg 1ml.......x and x= 250/110 the rest i got it thanks for your consideration Quote Link to comment Share on other sites More sharing options...
rainy_cloud Posted June 8, 2006 Share Posted June 8, 2006 Hi Khadija, thanks for ur nice words,,actually since we have 10 ml of the drug that has 25mg/ml so we know that we have 25*10= 250 mg total. in the question they said that they mix these 10 ml with 100 ml water so now you have 10+100= 110ml contain 250 mg.. got it?? that's why I said we have 110ml/250 mg ,, let me know if u need further explanation Quote Link to comment Share on other sites More sharing options...
KingTuT Posted June 8, 2006 Share Posted June 8, 2006 Hi rainy thank u [clap] but i think it is the next step that khdija doesn't understand .. 250mg--------->110ml 18mg---------->X ml X=18*110/250=8 i hope i am correct Quote Link to comment Share on other sites More sharing options...
rainy_cloud Posted June 8, 2006 Share Posted June 8, 2006 Yes,, you are right but just to make it clear for those (if any) who did not know from where did u get 18 in your solution,,,,,,,,,, since we calculated the child weight 18 Kg and the dose is 1 mg/kg/hr so we need 18 mg/hr :tup: Thanks for ur effort Hi rainy thank u [clap] but i think it is the next step that khdija doesn't understand .. 250mg--------->110ml 18mg---------->X ml X=18*110/250=8 i hope i am correct Quote Link to comment Share on other sites More sharing options...
khadija Posted June 8, 2006 Share Posted June 8, 2006 Yes,, you are right but just to make it clear for those (if any) who did not know from where did u get 18 in your solution,,,,,,,,,, since we calculated the child weight 18 Kg and the dose is 1 mg/kg/hr so we need 18 mg/hr :tup: Thanks for ur effort KingTut and rainy, thanks alot for your valuable time. I got it now :D God bless you Quote Link to comment Share on other sites More sharing options...
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