Chemistry, 12.08.2020 08:01 deaerionharper
Answer the question in attachment and can I ask from which country you are.
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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 19:00
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Maya wrote if you step to describe how carbon circulates between the atmosphere and living organisms
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Answer the question in attachment and can I ask from which country you are.
I am new on this app.
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