Question

please answer the question​

Answer 1

Explanation:

please refer to the attached file

Answer 2

Answer:

1) It is a Chemical change.

2) No; the ash don't look like the ribbon.

3) 2Mg+O2 gives rise to 2MgO

Explanation:

Magnesium ribbon burns in oxygen(O2 ) to form magnesium oxide(MgO).

2Magnesium ribbon burns in oxygen(O2 ) to form magnesium oxide(MgO).

2Mg+O2→2MgO

When MgO is dissolved in water following reaction takes place:

MgO+H2O→Mg(OH)2

Thus from Mg(OH)2 we can again form Mg.

Thus we can conclude that

Magnesium can be again formed but the mg ribbon can't be formed again.

Done with the answer.

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