Answer: -
The experiment Niven is doing is burning of Mg.
The first step would be finding the molar mass of MgO
Atomic mass of Mg = 24 g
Atomic mass of Oxygen = 16 g
Molar mass of MgO = 24 x 1 + 16 x 1 = 40 g
The balanced chemical equation for this reaction is
2 Mg + O2 -- > 2MgO
From the balanced equation we see that
2 Mg gives 2 MgO
2 x24 g of Mg O gives 2 x 40 g of MgO.
28g of MgO gives [tex] \frac{2 x 40 gram x 28 gram }{2 x 24 gram} [/tex]
= 46.66 g of MgO.
Answer:
The first step would be to write the balanced chemical reaction
Explanation:
Given:
Mass of Mg = 28.0 g
The first step is to write down the balanced chemical reaction depicting the stoichiometry
2Mg + O2 → 2MgO
Therefore, 2 moles of Mg produces 2 moles of MgO
i.e. the ratio of Mg:MgO = 1:1
Atomic mass of Mg = 24 g/mol
Moles of Mg reacted = [tex]\frac{28.0 g}{24 g/mol} = 1.167[/tex]
This is equal to the moles of MgO produced = 1.167
Molar mass of MgO = 24 + 16 = 40 g/mol
Mass of MgO produced = 1.167 moles * 40 g/mol = 46.7 g
