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marishachu [46]
2 years ago
15

How many formula units are in 25.4 g of MgCl2?

Chemistry
1 answer:
stiv31 [10]2 years ago
5 0

Answer: 1.58 x 10^{23}

Explanation:

1 mole of magnesium chloride has a mass of 95.211 g and contains 6.022⋅10^{23}formula units of magnesium chloride, you can say that,

25.0 g x (6.022 x 10^{23} form units MgCl2) /95.211 = 1.58 x 10^{23}

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When calcium metal (Ca) reacts with oxygen gas (O2), it produces the ionic compound calcium oxide (CaO). Write the balanced equa
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The balanced chemical equation for the reaction is

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and

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From the question,

We are to write a balanced chemical equation for the reaction between Calcium metal and oxygen gas

The balanced chemical equation for the reaction is

2Ca(s) + O₂(g) → 2CaO(s)

This is the balanced chemical equation for the reaction

To determine whether the reaction meets the requirements to be considered a redox reaction,

We will define the term <em>redox reaction</em>

<em></em>

A <em>redox reaction</em>, also called oxidation-reduction reaction, is any chemical reaction in which the oxidation number of a participating chemical species changes.

From the balanced equation above we can observe that the oxidation number of the participating species(Calcium and oxygen) changed.

The oxidation number of Calcium changed from 0 to +2

and

The oxidation number of Oxygen changed from 0 to -2

∴ The process meets the requirements to be considered a redox reaction.

Hence, the balanced chemical equation for the reaction is

2Ca(s) + O₂(g) → 2CaO(s)

and

The process meets the requirements to be considered a redox reaction.

Learn more here: brainly.com/question/17716543

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