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

A town produces a large number of tires and a small amount of kiwi fruit. As kiwis become more popular, the town decides to grow more kiwis and decrease tire ma

Why are spectator ions required for double replacement reactions to occur?

How did the treaty of Versailles make conditions ripe for the rise of Hitler in Germany

Trade Surplus occurs when a country exports more than they import ? True or False

Write the following value in scientific notation: 0.00000021 2.1 x 10^6 2.1 x 10 ^-6 2.1 x 10^5 2.1 x 10^ -7

Which of the following details from the exposition of "The Chrysanthemums" foreshadows Elisa's feeling that she is trapped? A. The setting feels claustrophobic

please help me thanks.

which of the following particle has negative charge? 1. neutrino 2. positron 3.gamma ray 4. all of the above 5.none of the above

Choose three words from “Ulysses” and three words from “The Lady of Shalott” that you did not know or had to look up in a dictionary.

Defensive strategies focus on ways to score points against the opposing team. True or False