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VladimirAG [237]
3 years ago
8

Ean rule for [Fe(Co) 2(No)2]​

Chemistry
1 answer:
evablogger [386]3 years ago
3 0

Answer:

Correct option is

C

36, 36

EAN=Z−X+Y

EAN=effective atomic number

Z=atomic number

X=number of electrons lost by metal

Y=Number of electrons donated by ligands.

For [Fe(CO)

2

(NO

+

)

2

], EAN=26+2+8=36

For Co

2

(CO)

8

, EAN=27+0+9=36

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A stock solution has a concentration of 1.5 M NaCl and is diluted to a 0.80 M solution with a volume of 0.10 L. What volume of t
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Answer:

0.053 L  is the volume of concentrated solution that was used

Explanation:

Let's determine the answer of this, by rules of three.

There is also a dilution formula.

Molarity is a sort of concentration that indicates the moles of solute in 1L of solution.

In 1 L of concentrated solution, there are 1.5 moles of NaCl

In 1 L of diluted solution, there are 0.80 moles.

The volume for the diluted solution is 0.10L

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1L of solution has 0.80 moles of solute

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This moles came from the concentrated solution, and we know that in 1L of this solution we have 1.5 moles. Therefore the rule of three will be:

1.5 moles are in 1L of solution

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1.5 M . Vol conc = 0.80 M . 0.10L

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