Chemistry, 24.12.2019 17:31 alexiaaaa234
When 5.00 g of nh4no3 is dissolved in 100.0 g of water in a styrofoam cup, the t = - 3.82 ^°c. is the process of dissolving ammonium nitrate endo- or exothermic? what is the heat of this process in kj/mol?
Answers: 2
Chemistry, 22.06.2019 03:00
Which step in naming unsaturated hydrocarbons is used for alkenes but not alkynes
Answers: 2
Chemistry, 22.06.2019 08:30
What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots
Answers: 3
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
When 5.00 g of nh4no3 is dissolved in 100.0 g of water in a styrofoam cup, the t = - 3.82 ^°c. is th...
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