Chemistry, 21.09.2020 19:01 clintonskippings
Elements in which group react strongly with water, producing hydrogen gas?
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
Chemistry, 22.06.2019 14:30
100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)
Answers: 1
Chemistry, 22.06.2019 18:30
Asample of hydrated tin (ii) chloride (sncl2) has a mass of 4.90 g. when it is dehydrated, it has a mass of 4.10 g. which is the correct chemical formula for the hydrate? sncl2•2h2o sncl2•4h2o sncl2•6h2o
Answers: 2
Elements in which group react strongly with water, producing hydrogen gas?...
Mathematics, 12.01.2021 19:30
Social Studies, 12.01.2021 19:30
Computers and Technology, 12.01.2021 19:30
Mathematics, 12.01.2021 19:30
History, 12.01.2021 19:30
Mathematics, 12.01.2021 19:30
Social Studies, 12.01.2021 19:30
Physics, 12.01.2021 19:30
Mathematics, 12.01.2021 19:30
Mathematics, 12.01.2021 19:30
Chemistry, 12.01.2021 19:30
Social Studies, 12.01.2021 19:30
Mathematics, 12.01.2021 19:30