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2 years ago

Identify the compound. Which of these is a compound?

Chemistry

2 answers:

STatiana [176]2 years ago

8 0

Answer: Image 3 is a compound.

Explanation: A compound is something that consists of two or more different elements bonded chemically.

A molecule is formed when two or more elements combine chemically.

An element is described as something which cannot be broken down by any chemical means.

We are given 4 images.

Image 1 is an element as it is showing the shell structure of Oxygen (O) element.

Image 2 is an element as only 1 element is known that is Magnesium (Mg).

Image 3 is a compound as in the structure 2 elements are shown which is bonded together. Elements present in this are Carbon (C) and Oxygen (O).

Image 4 is a molecule as in the structure 2 H-atoms combine chemically, but it cannot be considered as compound as the two elements are not different.

Bond [772]2 years ago

7 0

The answer has to be either CO2 or mg. But i am not sure which one

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andreev551 [17]

The answer is 33.2 moles of a solute is present in 4.00 L of an 8.30 M solution , Option A is correct .

<h3>What is Molarity ?</h3>

Molarity is defined as the amount of solute (in moles)in per litre of solution.

It is also known as molar concentration of a solution , It is expressed in mol/l

$\rm M =\dfrac{moles \;of\; solute}{Volume \;of \;solution} \\\\\\\rm M = \dfrac{n}{V} \\$

We can rearrange this equation to get the number of moles:

n= M * V

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Therefore 33.2 moles of a solute is present in 4.00 L of an 8.30 M solution , Option A is correct .

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