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Dennis_Churaev [7]
2 years ago
13

What mass of potassium chloride, KCl, is produced when 12.6 g of oxygen, 02, is produced?

Chemistry
1 answer:
blagie [28]2 years ago
4 0

Mass of KCl= 19.57 g

<h3>Further explanation</h3>

Given

12.6 g of Oxygen

Required

mass of KCl

Solution

Reaction

2KClO3 ⇒ 2KCl + 3O2

mol O2 :

= mass : MW

= 12.6 : 32 g/mol

= 0.39375

From the equation, mol KCl :

= 2/3 x mol O2

= 2/3 x 0.39375

=0.2625

Mass KCl :

= mol x MW

= 0.2625 x 74,5513 g/mol

= 19.57 g

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\text{Hg} \text{O} and \text{Hg}_{2} \text{O}.

Assuming complete decomposition of both samples,

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  • m(\text{O}) = m(\text{loss})

First compound:

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n = m/M; 0.6498 \; g of the first compound would contain

  • n(\text{O atoms}) = 0.048 \; g  / 16 \; g \cdot mol^{-1}= 0.003 \; mol
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Oxygen and mercury atoms seemingly exist in the first compound at a 1:1 ratio; thus the empirical formula for this compound would be \text{Hg} \text{O} where the subscript "1" is omitted.

Similarly, for the second compound

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n = m/M; 0.4172 \; g of the first compound would contain

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n(\text{Hg}) : n(\text{O}) \approx  2:1 and therefore the empirical formula

\text{Hg}_{2} \text{O}.

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3 years ago
Can I find a tutor to help me with this question?
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INFORMATION:

We have the following statements

And we must complete them

STEP BY STEP EXPLANATION:

To complete the statements, we need to classify matter according to its state:

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there is not enough thermal energy to overcome the intermolecular interactions between the particles. As a result, solids have a definite shape and volume.

- Liquid:

That describes the liquid state. In a liquid, the particles are still in close contact, so liquids have a definite volume. However, because the particles can move about each other rather freely, a liquid has no definite shape and takes a shape dictated by its container.

- Gas:

That describes the gas state, which we will consider in more detail elsewhere. Like liquids, gases have no definite shape, but unlike solids and liquids, gases have no definite volume either.

Finally, we know that:

- A solid has a definite volume and has a definite shape

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- A solid has a definite volume and has a definite shape

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What is the molecularity of the elementary step X + X + Y → Z?
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The molecularity of the elementary step X + X + Y → Z is 3.

<h3>What is Molecularity ?</h3>

Molecularity in chemistry is defined as the total number of molecules that react in an elementary reaction .

In the given question the elementary reaction given is

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The molecularity of the elementary step X + X + Y → Z is 3.

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brainly.com/question/14614762

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