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Sagot :
Answer:
Balanced Equation for reaction between Magnesium and Oxygen:
2Mg + O₂ --> 2MgO
Molar Mass of MgO is the atomic masses listed on the periodic table for the two elements Magnesium and Oxygen. Magnesium's molar mass is 24g/mol, and Oxygen's molar mass is 16g/mol. So MgO's molar mass would be 24 + 16 = 40g/mol.
The equation to find moles is:
[tex]moles \ = \ \frac{mass}{molar \ mass}[/tex]
So if we rearrange this equation to find for mass:
[tex]mass = moles \ * \ molar \ mass[/tex]
So you have to multiply 0.300 moles by 40, which gives you 12g
Meaning the mass of Magnesium Oxide is 12g.
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