Chemistry, 21.02.2020 03:50 familyk0jj3
An alloy sample weighing 5.00 g contains Cr. The Cr is chemically converted to a K2Cr2O7 solution. The Cr2O7-2 ion in the solution is completely and exactly converted to Cr 3 by reacting it with 4.73 g of I2. What is the % Cr in the alloy?
Need to balance: Cr207^2- + I2 ---> Cr^3+ + IO3^-
You want to prepare 450.0 ml of a 145 pm K+ ion solution. The density of the solution is 1.01g/mL. Disposal solution is 0.728M K2SO4. How many mL of the K2SO4 do you need to use?
Answers: 1
Chemistry, 22.06.2019 03:00
Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife
Answers: 3
Chemistry, 22.06.2019 05:30
What happens to the atomic radius when an elctron is lost
Answers: 1
Chemistry, 22.06.2019 16:30
Asample of freon gas has a volume of 2.23 liters, a pressure of 4.85 kpa, and a temperature of -1.36°c. calculate the volume at a pressure of 1.38 kpa and a temperature of 5.5°c. (show work)
Answers: 1
Chemistry, 22.06.2019 22:30
Which statement best summarizes the importance of ernest rutherford’s gold foil experiment? it proved that all of john dalton’s postulates were true. it verified j. j. thomson’s work on the atomic structure. it showed that an electron circles a nucleus in a fixed-energy orbit. it showed that a nucleus occupies a small part of the whole atom.
Answers: 1
An alloy sample weighing 5.00 g contains Cr. The Cr is chemically converted to a K2Cr2O7 solution. T...
Mathematics, 23.08.2019 09:30
Chemistry, 23.08.2019 09:30
Mathematics, 23.08.2019 09:30
World Languages, 23.08.2019 09:30
Mathematics, 23.08.2019 09:30
History, 23.08.2019 09:30
History, 23.08.2019 09:30
Business, 23.08.2019 09:30
English, 23.08.2019 09:30
Social Studies, 23.08.2019 09:30