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3 years ago

Naming the hydrates?

Chemistry

2 answers:

slamgirl [31]3 years ago

8 0

HEY mate here your answer

CoBr2 . 6 h2o = Cobalt(II) Bromide Hexahydrate

-BARSIC- [3]3 years ago

7 0

Cobalt(II) bromide hexahydrate.

<h3>Explanation</h3>

Name of the hydrate of an ionic compound:

Name of the ionic compound + Number of water molecules + "hydrate".

What's the name of the ionic compound CoBr₂ without all the H₂O?

There are two ions in this compound:

Co²⁺, and
Br⁻.

As a transition metal, cobalt Co can form ions of more than one possible charges. Hence, it's necessary to indicate the oxidation state of cobalt in the name. The oxidation state of Co in Co²⁺ is +2. The Co²⁺ ion will be called cobalt(II).

Bromine Br is a nonmetal. The Br⁻ ion is named as bromide.

Thus the name of the salt without H₂O: CoBr₂ Cobalt(II) bromide.

There are six water molecules for every one formula unit of the salt. Hence the prefix hexa-.

Name of the hydrate:

Cobalt(II) bromide hexahydrate.

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Answer:

2.4 moles of oxygen are needed to react with 87 g of aluminium.

Explanation:

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2 years ago

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A tank contains 90 kg of salt and 2000 L of water. Pure water enters a tank at the rate 6 L/min. The solution is mixed and drain

sashaice [31]

Answer:

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Explanation:

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$m=90kg*[2000L/(2000L+3*L/min*t)]$

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