A piece of magnesium weighing 48 grams is burned in air n 80 gram of magnesium oxide is formed. what mass of oxygen combined with the magnesium is in the reaction?

looks like 32 g of O2, no?

What mass of oxygen combined with the magnesium in this reaction

To determine the mass of oxygen combined with the magnesium, we can use the law of conservation of mass. According to this law, the total mass of the reactants must be equal to the total mass of the products in a chemical reaction.

Given:
Mass of magnesium (Mg) = 48 grams
Mass of magnesium oxide (MgO) = 80 grams

To find the mass of oxygen, we need to calculate the mass difference between the magnesium oxide and the magnesium.

Mass of oxygen = Mass of magnesium oxide - Mass of magnesium

Mass of oxygen = 80 g - 48 g
Mass of oxygen = 32 grams

Therefore, the mass of oxygen combined with the magnesium in the reaction is 32 grams.

To find the mass of oxygen that combined with the magnesium in the reaction, we need to determine the change in mass. This can be done by subtracting the initial mass of magnesium from the final mass of magnesium oxide.

Initial mass of magnesium = 48 grams
Final mass of magnesium oxide = 80 grams

Change in mass = Final mass - Initial mass
= 80 grams - 48 grams
= 32 grams

Therefore, 32 grams of oxygen combined with the magnesium in the reaction.