What mass of magnesium oxide is formed when 6 g of magnesium reacts with oxygen?

1 Answer
anor277
Oct 11, 2016

Approx. a 10*g mass is formed.

Explanation:

Mg(s) + 1/2O_2(g) rarr MgO(s)

"Moles of metal" = (6.0*g)/(24.31*g*mol^-1) = 0.247*mol.

And thus there are 0.247*molxx40.3*g*mol^-1 "magnesium oxide" ~= 10*g

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