12.0107u is the mass number of carbon.
I think it would be A because hazardous waste would most likely be found in dust, fumes etc. I'm not sure though.
No chemical bonding take place.
And the elements or compounds in the mixtures have no definite proportions.
I think its B but im not sure...
Answer:
The mass of Mg consumed is 23.76 g.
Explanation:
Magnesium and nitrogen react as : three moles of magnesium reacts with one mole of nitrogen to give one mole of magnesium nitride.
as given that the mass of nitrogen reacted = 9.27 g
moles of nitrogen reacted = 
Thus moles of magnesium reacted = 3 X 0.33 = 0.99 moles
mass of Mg reacted = moles X atomic mass = 0.99 X 24 = 23.76 grams