A dichromate ion has 56 valence electrons. Valence electrons are the electrons that are present in an atom which are responsible or allows the formation of a chemical bond. When you draw the lewis structure of a dichromate ions, you will have to calculate the valence electrons by (6 + 6 + 6 + 6 + 6 + 6 + 6 + 6 + 6 ) – (-2) = 56.
Answer:
, The partial pressure of O2 is = 21 atm
Explanation:
The concept is the pressure exerted by each gas is independent of one another or in other words independent of the pressure exerted by all other gases present.
This means that total pressure is the sum of the individual pressure of each gas by dalton's law.
So, putting the given values we get
43 = P_O2 +15+7
P_O2 = 21 atm
Therefore, The partial pressure of O2 is = 21 atm
Answer:
Physical change are the temporary reversible change in which no new substance is formed.
Example: boiling of milk, melting of wax, cooling water,etc.
Answer:
Morganite has weak violet fluorescence. Beryl (/ˈbɛrəl/ BERR-əl) is a mineral composed of beryllium aluminium cyclosilicate with the chemical formula Be3Al2Si6O18.
Formula mass: 537.50 g/mol
Crystal class: Dihexagonal dipyramidal (6/mm...
Ultraviolet fluorescence: None (some fracture f...
Specific gravity: Average 2.76
Explanation: