Question

48 grams of magnesium react with oxygen to make 80 grams of magnesium oxide find how much oxygen has been used by applying law of conservation of mass ​

Answer 1

Answer:

32grams

Explanation:

Mg+1/2O2=MgO

Mg = 24*2=48g

O2=16*2=32g

MgO= 40*2 =MgO

2Mg + O2 = 2MgO

48g Mg+32g O2=80g MgO