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

The waiting time in line at an ice cream shop has a uniform distribution between 3 and 14 minutes. What is the 75th percentile of this distribution? (Recall: Th

Monosodium glutamate (NaC5H8NO4) is used extensively as a flavor enhancer what is its percent composition

How many sides does a regular polygon have if one of its exterior angles =45°?

What was one major effect of agricultural collectivization under Joseph Stalin? A. Protestors forced Stalin from power. B. Stalin became more popular with Sovie

The existence and monitoring of independent regulatory agencies depends on the

What is the inequality of -3x-3<6

Question 1 of 2 A single-step income statement: Is not permitted when financial statements are prepared in accordance with generally accepted accounting princip

Which best explains why the narrator mentions the gentleman's names in the opening sentence? to establish credibility, suggesting many want to hear his tale to

If Machine A makes a yo-yo every five minutes and Machine B takes ten minutes. How many hours would it take them to make 20yo−yos? Give me the hours and minutes

Accrued sales salaries amount to $1,700. Prepaid selling expenses of $2,800 have expired. A physical count of year-end merchandise inventory shows $34,400 of go