tthall7188 tthall7188
  • 04-04-2018
  • Chemistry
contestada

What is the oxidation number of chromium in k2cr2o7?



1.



+12

2.



+2

3.



+3

4.



+6?

Respuesta :

WaleMaths
WaleMaths WaleMaths
  • 05-04-2018
K₂Cr₂O₇

(+1*2) + (x*2) + (-2*7)

2 + 2x - 14 = 0
2x - 12 = 0

2x = 12

x = 12/2

x = +6...
Answer Link

Otras preguntas

how are saturated fats different from unsaturated fats
What is programming blocks?
African Americans who migrated from the south to the West after the Civil War ​
Mr. Green's lawn mower holds 600 milliliters of gasoline in the tank. He just filled his 6 liter gas can at the station. How many times will he be able to fill
20 points Every water molecule is made up of two hydorgen atoms and one oxygen atom. This arrangement causes a water molecule to have a slightly negative charg
How did colonists respond to the tea act ?
Ap chem, please help with number 31!!
What are 3 macro nutrients
Solve for "X" 4x – 0 = 12 hurry
An atom has 17 protons and 18 neutrons. Which symbol represents that atom, including its mass number? Question 15 options: Cl-32 Cl-35 S-34 Ar-33