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mario62 [17]
3 years ago
14

Interpret the electron configuration

Chemistry
1 answer:
Svetach [21]3 years ago
6 0

Answer:

Ca for calcium

20 electrons

2-2s electron

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How many moles of Mg(OH)2 will react with 2.5 mol HCI?
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Answer:

1.25mole of Mg(OH)₂

Explanation:

The reaction is between Mg(OH)₂ and HCl, this is a neutralization reaction between an acid and a base.

         Mg(OH)₂   +   2HCl   →   MgCl₂   + 2H₂O

The balanced reaction equation is given above.

           2 mole of HCl reacts with 1 mole of Mg(OH)₂

So,       2.5mole of HCl will react with \frac{2.5}{2}  = 1.25mole of Mg(OH)₂

The number of moles of Mg(OH)₂ is given as 1.25mol

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