Recent content by Scarpetta

linear regression where am i going wrong?? Linear regression using least square fit method for the determination of cocaine sample Cocaine (mg/ml) Peak height X= 2.75 Y=27377 X squared=0.9625 X x Y=3241.272 M = 10 x 3241.272 – 2.75 x 27377 / 10 x 0.9625 – 7.5625 =...

not bad for a first attempt, close but no cigar, thankx for the pointers

Can anyone tell me if this concentration calculation is correct please, its my first attempt and a bit unsure. Two point determination of cocaine sample Cocaine (mg/ml) Average peak height 0.015 13059 0.20 98496 Unknown (2mg/ml) 61136General equation Y = mx + c Equation 1 standard 1: 13059...

Please help, A 15.23mg sample of cocaine was cemically digested to convert its nitorgen to ammonia and then diluted to 100.00cm3. A 10.00cm3 of this solution was placed in a 50.00cm3 volumetric flask and treated with 5.0cm3 of phenol solution and 2.0cm3 of sodium hypochlorite solution. The...