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How many grams of MgO can be produced with 4.63 grams of oxygen (O2)?

2Mg+O2=2MgO

Respuesta :

Answer:

11.6 grams of MgO can be produced with 4.63 grams of oxygen.

Explanation:

[tex]2Mg+O_2\rightarrow 2MgO[/tex]

Mass of oxygen gas = 4.63 g

Moles of oxygen gas = [tex]\frac{4.63 g}{32 g/mol}=0.145 mol[/tex]

According to reaction,  1 mole of oxygen gas gives 2 moles of magnesium oxide, then 0.1447 moles of oxygen gas will giv e:

[tex]\frac{2}{1}\times 0.145 mol=0.29 mol[/tex] of magnesium oxide

Mass of 0.2894 moles of magnesium oxide:

= 0.29 mol × 40 g/mol = 11.6 g

11.6 grams of MgO can be produced with 4.63 grams of oxygen.