Question

A silver metal X taken in the form of a ribbon,when ignited,burns in air with a dazzling white flame to form a white powder Y.when water is added to power Y , it dissolves partially to form another substance Z what is used as an antacid
what is meant x and name the white power y?​

Answer 1

Answer:

The metal is X is Mg. (b) The white powder Y is MgO. (c) White powder Y dissolves partially in form substance Z. It is Mg(OH)2Mg(OH)2and is used as an antacid. 

(d) The chemical reactions that are taking place are : 

2Mg(s)+O2(g)(X)−→−−−(Ignition)2MgO(s) (Y)2Mg(s)+O2(g)→(Ignition)2MgO(s)(X) (Y) 

MgO(s)+H2O(aq)(Y)→Mg(OH)2(aq) (Z)

Answer 2

Answer:

Hey mate here's ur answer!

X is magnesium.

Y is magnesium oxide which is a white powder.

The chemical reaction is--------

2Mg + O2 ----------> 2MgO

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