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Bezzdna [24]
3 years ago
5

The elements in group 2 all have _ valence electrons. A.2 4 6 8

Chemistry
2 answers:
Vlada [557]3 years ago
5 0

Answer:

2 valence electrons

Explanation:

JulijaS [17]3 years ago
4 0

Answer:

2 valence electrons,

Explanation:

For example magnesium Mg.

Mg readily loses  the 2 valance electrons to form Mg2+ which combines , for example, with chlorine to form the ionic  compound MgCl2.

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What is the total number of oxygen atoms represented in the formula na2c03.10h2o?
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As per the given chemical formula- Na2CO3.10H2O, one mole of the chemical compound contains 13 moles of oxygen atoms. Hence

Number of moles of oxygen atoms in one mole of Na2CO3.10H2O = 13

number of moles of oxygen atoms in 0.2 moles of Na2CO3.10H2O = 13 X 0.2 = 2.6

Now, one mole of a substance contains 6.022 X 10^23 particles of the substance. Thus

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The process of fermentation involves chemical reactions that convert solid glucose (C6H12O6) into aqueous ethanol and carbon dio
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Answer:

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Explanation:

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3 years ago
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