Chemistry, asked by viper2, 1 year ago

1.5 mole of O2 combine with Mg to form Mgo.The mass of Mg that has combined is?

Answers

Answered by qais
10
2Mg +O₂ -----------> 2MgO

No. of moles of O₂ = 1.5

From the balance reaction, we can see, 2 moles of Mg reacts with 1 mole of O₂ to form 2 mole of MgO
That means, 1.5 moles of O₂ will react with (2×1.5) = 3 moles of Mg to form 3 moles of MgO

Atomic mass of Mg = 24 g
no. of moles = Mass/Atomic weight
⇒mass = no. of moles× Atomic weight
            = 3×24 = 72 g

Answered by VishalSharma01
83

Answer:

Explanation:

2Mg + O2 -----> 2MgO

2 Gram atoms of Mg reacts with 1 Gram Molar of Oxygen ie.,

(2 x 24) gm of Mg reacts with 32 gm of Oxygen 32 gm of O2 reacts with= 48 gm of Mg

3 moles of Mg = 24.31 × 3 = 72.93 g

Hence, 1.5 mole Oxygen required 72.93 g of Mg

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