tthall7188 tthall7188

04-04-2018
Chemistry

contestada

What is the oxidation number of chromium in k2cr2o7?

1.

ï¿¼

+12

2.

ï¿¼

+2

3.

ï¿¼

+3

4.

ï¿¼

+6?

Respuesta :

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

(-4y^3-5y+16)+(4y^2-y+9)

110x12.......will make brainliest

one technological factor that led western Europe and the US to industrialize before 1850???

What component of the brain makes teenagers seek constant validation by sharing selfies with friends on social media?

Describe and explain the importance of the change to corn

−4(3d−2)−7 What equation is equivalent? A) -12d-15 B) 12d-15 C) None of the Above

How much will it cost if you bought 5 bags of dog food every week

Which best describes the point of view of this passage? A) The passage is optimistic about the future of space exploration from the moon, to Mars, and beyond.

You currently have $800, and you need $1,200 to rent an apartment. If you are investing at a rate of 5%, how long will it be before you can move?

what is the wavelength of a photon that could just barely ionize a hydrogen atom with its electron in the ground state?