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4 years ago

Look at the picture of two different substances above. Which substance is a mixture? A. Y and Z

Chemistry

2 answers:

Murrr4er [49]4 years ago

7 0

Answer:

Option B

Explanation:

A mixture is two or more substances combined by physical means. Substance Y is composed of many different types of substances mixed together. Therefore, it is a mixture. Substance Z is composed of all the same types of particles. Therefore, it is not a mixture.

Feliz [49]4 years ago

5 0

Answer:

option B is correct.

Y is a mixture in the picture.

Explanation:

Different types of substances combine physically and form a mixture.

Mixture formed by the combination of two or more substances that that combine in same physical state.

For example mixture of copper sulphate and solid chloride in dry form and that will look like white and blue crystal in a mixture.

The picture Z showing dots of same color and is not a mixture, while picture Y shows dots of different colors clearly indicating that it is picture for mixture.

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So you have 1.75 mol CHC1₃ x (6.022x10²³) = 1.05385 x 10²⁴ atoms of CHCl₃

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Explanation:

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0.2 moles, assuming weight of dried salt

Explanation:

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3 years ago

What type of compound is created when potassium and chlorine combine explain how they combine and write the chemical formula. Ne

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Answer : Ionic compound is created when potassium and chlorine combine. The chemical formula of the compound is KCl.

Explanation :

When potassium and chlorine combine then the type of compound created is Ionic compound.

Ionic compound : These are those compounds which are made of a metal element and non-metal element. Salts are ionic compound which consists of a positive and negative ions.

The electronic configuration of Potassium is,

$1s^22s^22p^63s^23p^64s^1$

The electronic configuration of Chlorine is,

$1s^22s^22p^63s^23p^5$

From this we conclude that the potassium atom is a metal which has 1 electron in their valence shell and chlorine atom is a non-metal which has 7 electrons in their valence shell. For the complete octet, chlorine atom needs only 1 electron which it receives from the potassium atom.

During this process, potassium atom will loses 1 electron and acquire positive charge and chlorine atom will gain 1 electron from potassium atom and acquire negative charge.

$K^++Cl^-\rightarrow KCl$

The chemical formula of the compound is KCl.

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3 years ago

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