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maw [93]
2 years ago
13

1.5g of magnesium ribbon is burnt in oxygen to produce 2.5g of magnesium oxide. How much oxygen is required in grams?

Chemistry
1 answer:
Furkat [3]2 years ago
4 0

Answer:

2.5 grams

Explanation:

law of conservation of mass applies. the magnesium completely burns

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When q is the heat energy in joules (J)

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∴ q = 1.85 g * 4.18 J/g.°C * 11 °C

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