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how to calculate magnesium oxide and oxygen

mass of crucible and lid - 22.31 g
mass of crucible lid and magnesium ribbon - 22.75 g
mass of crucible lid and magnesium oxide (5 minutes heating with exposure to oxygen) - 22.79 g
can you tell me how to work out the amount of magnesium oxide, oxygen and the mass of the magnesium that i reacted :smile:
do you have the equation
no
Original post by alevelstruggle12
mass of crucible and lid - 22.31 g
mass of crucible lid and magnesium ribbon - 22.75 g
mass of crucible lid and magnesium oxide (5 minutes heating with exposure to oxygen) - 22.79 g
can you tell me how to work out the amount of magnesium oxide, oxygen and the mass of the magnesium that i reacted :smile:


When you heat Mg it all turns to magnesium oxide by reacting with oxygen.

Before: only magnesium
After: magnesium + oxygen

How do you work out how much oxygen?

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