Chemistry, 10.03.2021 18:30 yellowsea84
During a lab activity students were given samples of four different unknown elements. The students record their observations as shown in the table
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 21:00
One similarity and one difference between an element and a mixture of elements
Answers: 1
Chemistry, 22.06.2019 21:50
28. which is not a reason that water is used to store spent fuel rods from nuclear power plants? water increases the speed of the chain reaction in the fuel rods. water protects nuclear power plant workers from the high temperature and radiation of the fuel rods. water acts as a radiation shield to reduce the radiation levels. water cools the spent rods. salts action
Answers: 1
During a lab activity students were given samples of four different unknown elements. The students r...
Mathematics, 24.08.2019 23:30
History, 24.08.2019 23:30
History, 24.08.2019 23:30
Health, 24.08.2019 23:30
Health, 24.08.2019 23:30
Computers and Technology, 24.08.2019 23:30
Mathematics, 24.08.2019 23:30
Biology, 24.08.2019 23:30
Social Studies, 24.08.2019 23:30
Physics, 24.08.2019 23:30
Biology, 24.08.2019 23:30