Which of the following does NOT show the law of conservation of mass? A) 24g of Mg burns in 32g of O2 to produce 56g of MgO. B) 2 atoms of Mg react with 1 molecule of O2 to produce 2 units of MgO. C) 1 atom of Mg reacts with 1 atom of O to produce a unit of MgO that contains 2 atoms D) 24ml of Mg burns in 32ml of O2 to produce 56ml of MgO.

Question

Which of the following does NOT show the law of conservation of mass?  A) 24g of Mg burns in 32g of O2 to produce 56g of MgO. B) 2 atoms of Mg react with 1 molecule of O2 to produce 2 units of MgO. C) 1 atom of Mg reacts with 1 atom of O to produce a unit of MgO that contains 2 atoms D) 24ml of Mg burns in 32ml of O2 to produce 56ml of MgO.

cuanchi · Answer

D) will be hard to calculate the mass, specially the mass of  O2 since the pressure is not given