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dybincka [34]
3 years ago
8

How do you make a 3M solution of KBr? How many moles of KBr are 1 liter of a 0.3M solution?

Chemistry
2 answers:
pashok25 [27]3 years ago
8 0
Molarity= moles/liter, so you would need 3mol KBr/1 liter
(0.3M)(1L)= 0.3mol KBr
emmasim [6.3K]3 years ago
7 0

Answer:

12M

Explanation:

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Colt1911 [192]

Radius of the positive ion will be smaller than the radius of its parent atom.

<h3>Explanation</h3>

Sodium Na has atomic number 11. A neutral Na atom has 11 electrons. It has

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Na tends to lose one electron. It would form an Na⁺ ion. The ion is positive and has ten electrons. It has

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Three of the main shells of Na contain electrons. Only two main shells contain electrons in Na⁺. The energy of the second main shell is higher than the first. It is more distant from the nucleus than the first electron shell. Similarly, the third main shell is further away from the nucleus than the second.

The outermost shell in Na is the third main shell. The outermost shell in Na⁺ is the second main shell. As a result, the outermost electrons in Na are further away from the nucleus that electrons in Na⁺. As a result, the radius of Na appears to be larger than that of Na⁺.

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3 years ago
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3 years ago
In this equation: FeBr2+K2CO3=Fe2(CO3)2+KBr do I simplify the 2's on iron and the CO3 on the "right side" before continuing or k
svetlana [45]
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