The law of conservation of mass tells you that mass is neither created nor destroyed.
2Mg + O2 ==> 2MgO
50 g..+..x g...=......80
So what must x be?
A piece of magnesium ribbon weighting 50g is burn in air and 80g of magnesium oxide is formed. What mass of oxygen combined with the magnesium in this reaction?
1 answer
1 answer