If 10 gms of $M g$ react with 20 gms of $O_{2}$ , then how many grams of $M g O$ is formed?

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Solution

The correct option is B
30

According to the law of conservation of mass, mass is neither created nor destroyed ". So 10 gms of $M g$ react with 20 gms of $O_{2}$ to give 30 gms of $M g O$ .

Since the total mass of reactants is 30, the total mass of product also will be 30.

$M g + O_{2} \to M g O$ .

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If 10 gms of Mg react with 20 gms of O2, then how many grams of MgO is formed?

The correct option is B 30 According to the law of conservation of mass, mass is neither created nor destroyed ". So 10 gms of Mg react with 20 gms of O2 to give 30 gms of MgO. Since the total mass of reactants is 30, the total mass of product also will be 30. Mg+O2→MgO.

If 10 gms of $M g$ react with 20 gms of $O_{2}$ , then how many grams of $M g O$ is formed?