1 g of magnesium is burnt with o. 56 g of oxygen in a closed vessel . which is the excess reactant ?
in this question how do we come to know about the compound they are talking about ?? For example it can be MnO or MnO4 etc.

Question

Akram Khan · Accepted Answer

Hi,

You can take hints from the reaction conditions and product formed. It can not be MgO because when mg is burnt in air or with oxygen it forms the powder of MgO. And in the question what mentioned is magnesium is burnt with oxygen it means free magnesium which occurs in solid state.

So in this way you can take an idea what is asked in the question.

Hope you find this helpful.

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1 g of magnesium is burnt with o. 56 g of oxygen in a closed vessel . which is the excess reactant ? in this question how do we come to know about the compound they are talking about ?? For example it can be MnO or MnO4 etc.

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