Final answer:
To calculate the mass of magnesium nitride produced by completely burning 6g of magnesium in air, you need to use the balanced chemical equation and the molar mass of magnesium nitride. The mass of magnesium nitride that can be produced is approximately 25 g.
Step-by-step explanation:
To calculate the mass of magnesium nitride produced by completely burning 6g of magnesium in air, we need to use the balanced chemical equation and the molar mass of magnesium nitride. The balanced chemical equation is:
2Mg + N₂ → 2Mg₃N₂
The molar mass of magnesium nitride is approximately 100.95 g/mol.
Using the molar ratio from the balanced equation, we can calculate the moles of magnesium (6g / 24.31 g/mol = 0.247 moles) and then use the molar ratio to find the moles of magnesium nitride (0.247 moles * (2 moles Mg₃N₂ / 2 moles Mg) = 0.247 moles).
Finally, we can calculate the mass of magnesium nitride by multiplying the moles by the molar mass (0.247 moles * 100.95 g/mol = 24.97 g).
Therefore, the mass of magnesium nitride that can be produced by completely burning 6g of magnesium is approximately 25 g.