Question

3g of mg is burnt with xg of o2 find x during the formation of mgo​

Answer 1

Given info : 3g of Mg is burnt with x g of O₂.

To find : value of x during formation of MgO.

Solution : chemical reaction between Mg and O₂ is given by,

2Mg + O₂ ⇒2MgO

Here 2 moles of Mg react with 1 mole of O₂.

or, 2 × 24 g of Mg reacts with 32g of O₂.

or, 3g of Mg reacts with 32/48 × 3 = 2g of O₂

Therefore value of x equals to 2 during the formation of MgO

Answer 2

Answer :-

Given info : 3g of Mg is burnt with x g of O₂.

To find : value of x during formation of MgO.

Solution : chemical reaction between Mg and O₂ is given by,

2Mg + O₂ ⇒2MgO

Here 2 moles of Mg react with 1 mole of O₂.

or, 2 × 24 g of Mg reacts with 32g of O₂.

or, 3g of Mg reacts with 32/48 × 3 = 2g of O₂

Therefore value of x equals to 2 during the formation of MgO