2 years ago

What happens when molecular compounds melt?

Chemistry

2 answers:

kenny6666 [7]2 years ago

8 0

<span>) Molecules arranged in a regular pattern change to an irregular pattern.</span>

Harman [31]2 years ago

6 0

Molecules arranged in regular pattern changes into an irregular pattern

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A bar of copper has a mass of 216g and a volume of 24cm^3. What is the density of copper?

7nadin3 [17]

Answer:

<h2>The answer is 9 g/cm³</h2>

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question

mass = 216 g

volume = 24 cm³

The density is

$density = \frac{216}{24} \\$

We have the final answer as

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Explanation:

Screenshot below:

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2 years ago

ammonium bromide reacts with copper(i) sulfate in aqueous solution to form a solid precipitate. what is the net ionic equation f

sukhopar [10]

Answer:

$Br^-(aq)+Cu^+(aq)\rightarrow CuBr(s)$

Explanation:

Hello,

In this case, the molecular chemical reaction is written as:

$2NH_4Br(aq)+Cu_2S(aq)\rightarrow 2CuBr(s)+(NH_4)_2SO_4(aq)$

In such a way, considering the net ionic notation and the solid yielded copper (I) bromide, we write:

$2NH_4^+(aq)+Br^-(aq)+Cu^+(aq)+SO_4^{2-}(aq)\rightarrow CuBr(s)+NH_4^+(aq)+SO_4^{2-}(aq)$

Whereas ammonium and sulfate ions are spectator ions, therefore the net ionic equation is:

$Br^-(aq)+Cu^+(aq)\rightarrow CuBr(s)$

Regards.

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Explanation:

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