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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