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Question
What will be the increase in mass of magnesium, if 120g of magnesium is heated in presence of oxygen?
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Solution
When magnesium is burned in presence of oxygen magnesium oxide is formed.
2Mg + O2 -> . 2MgO
2×24 . 2×16 2×( 24+16)
48. 32 . 80
48 g produces 80 g MgO
120 g produces (80/48)×120g
=200g
2Mg + O2 -> . 2MgO
2×24 . 2×16 2×( 24+16)
48. 32 . 80
48 g produces 80 g MgO
120 g produces (80/48)×120g
=200g
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