Chemistry, 31.01.2020 14:43 lily539711
Aparticular sample of pantothenic acid, a b vitamin, gives off 72.6 ml of nitrogen gas at 23 degrees c and 795 torr. what is the volume of the nitrogen at stp?
Answers: 2
Chemistry, 22.06.2019 14:00
The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.
Answers: 3
Chemistry, 22.06.2019 15:00
Which of the following is the correct formula for copper (i) sulfate trihydrate? cuso4 ¡ 3h2o cuso4(h2o)3 cu2so4(h2o)3 cu2so4 ¡ 3h2o
Answers: 1
Chemistry, 23.06.2019 05:30
What is the morality of 2.50 l of solution that contains 1.85 mol of anhydrous sodium tetraborate?
Answers: 1
Aparticular sample of pantothenic acid, a b vitamin, gives off 72.6 ml of nitrogen gas at 23 degrees...
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