Final answer:
In the given chemical equation, 1 mole of magnesium (Mg) reacts with 1 mole of oxygen (O₂) to produce 1 mole of magnesium oxide (MgO). To solve for x in the equation magnesium oxide (745) - magnesium(x) + oxygen (53), the amount of oxygen required is 372.5g.
Step-by-step explanation:
In the given chemical equation 2Mg + O₂ → 2MgO, we can deduce that 1 mole of magnesium (Mg) reacts with 1 mole of oxygen (O₂) to produce 1 mole of magnesium oxide (MgO).
To solve for x in the equation magnesium oxide (745)--------------- magnesium(x) + oxygen (53), we can set up a proportion:
(745 g MgO) / (2mol MgO) = (53 g oxygen) / (1mol oxygen)
Simplifying the proportion, we find:
x = (745 g MgO) * (1mol oxygen) / (2mol MgO) = 372.5 g oxygen