Monday
December 9, 2013

Posts by Fai

Total # Posts: 102

Chemistry
Concentrated hydrochloric acid is a 38% solution of HCL in water and has a density of 1.18g/ml. How many milliliters of concentrated hydrochloric acid are needed to prepare 500ml of 1:200 HCL solution? The answer is not 2.12ml My calculation: 1.18g/ml x 1000ml x 0.38/36.5 = 12...

Pharmacy math
How much dil HCL (10% w/w) HCL specific gravity = 1.045 would be required to prepare 2000ml of a solution containing 0.005 molar HCL? HCL m.w.t = 36.5 Who try to solve for me. Please help The right answer is 34.9ml

Pharmacy math
concentrated hydrochloric acid is a 38% solution of hcl in water and has a density of 1.18g/ml. How many milliliters of concentrated hydrochloric acid are needed to prepare 500ml of a 1:200 hcl solution? Who helps me to solve it for me. I think 2.12 ml is not right.

Intermediate algebra
Factor the following expression completely: 9x^4-81y^2

chemistry
1.2g/ml x 1000ml x 0.37 / 36.5 = 12.16M 12.16m= 2500ml x 0.5 12.16m = 1250ml x = 1250ml/12.16 x = 103 ml This is answer.

I am a certified pharmacy technician
1ounce= 30ml 12x30ml =360ml 360ml x 9% = 32.4ml 4%X + 12Y(360ml-X)= 32.4ml 0.04X + 43.2ml + 0.12X = 32.4ml 0.076X = 10.8ml x= 142.ml 4% y = 360-142.1ml y= 218ml 12%

Adult education- child care development
number rxam

chemistry
My own calculation 1.179g/ml x 1000ml x 0.36/36.5 x = 11.62 11.62M = 4.6 L change 4600ml 11.62 M = 4600ml x 1.9 11.62M = 8740ml X= 8740ml/11.62 x= 752ml

Chemistry
0.79g/ml x 76.9ml = 60.7g 60.7g /46.06 = 1.3 mole 1.3/ 0.25 L = 5.2M

Chemistry
My calculation 0.791g/ml x 75ml /46 g/mol = 1.29M 1.29M /0.15KG x= 0.116M

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