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ZanzabumX [31]
3 years ago
7

What is it?

Chemistry
1 answer:
arlik [135]3 years ago
8 0

Answer:

The correct reaction is as follows:

2Mg + O2 → 2MgO

3. Synthesis

Explanation:

Chemical reactions are of different types depending on how they occur. One of these types is called SYNTHESIS OR COMBINATION REACTION. A synthesis reaction is that reaction in which two atoms of two elements are chemically combined to form a single molecule or compound. That is;

A + B → AB.

This is the case in this question where atoms of Magnesium (Mg) and oxygen (O) reacted to form a single compound of Magnesium oxide (MgO). Hence, it is said to be a SYNTHESIS REACTION.

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3 years ago
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Explanation:

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As we know , the molecular mass of NaCl = 58.5 g/mol

Moles is calculated as -

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M = n / V  =  0.123 mol / 0.1 L = 1.23 M

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