Movement of molecules from an area of higher concentration to one of lower concentration is called Diffusion
Magnetizing steel is a physical change, not a chemical change.
Answer:
30 g of magnesium would be combined with 20 g of oxygen. The law used solving this problem is the Lavoisier Law of conservation of mass.
Explanation:
If 60 g of magnesium combines with 40 g of oxygen to make 100 g of magnesium oxide, then 30 g of magnesium will combine with 20 g of oxygen to make 50 g of magnesium oxide.
This happens because in a chemical reaction there is no creation or descruction of atoms, only a rearrangement. Therefore, the mass of reactants should be equal to the mass of products.
The following equation represents the proportions of the substances:
Mg + 1/2O₂ → MgO
Answer:
Yes
Explanation:
Because mixture is made up of two or more types of atoms .
Enthalpy change = mass * specific heat capacity * temperature change
Mass is 25.0 (given)
Specific heat capacity is 2.108 (checked online)
Temperature change : none
So input these into the equation :
25.0 * 2.108 = 52.7
