Answer:
Explanation:
What you know is that the electrical energy comes from the wind turbine. Therefore the x must identify the type of energy that the wind turbine represents.
It must represent mechanical energy because blades of the wind turbine turns to produce electrical energy.
Mercury-199 is composed of 80 protons, 119 neutrons, and 80 electrons.
Answer:
A. The increase in the mass of the magnesium oxide was due to oxygen atoms in the air.
Explanation:
Burning occurs in the presence of oxygen. A chemical combination occurs between Mg and O in that the atom of magnesium attracts one another.
Mg + O₂ → MgO
Starting with the magnesium, on reacting with oxygen a new compound forms. This is why there is mass increase in the MgO compared to the starting material.
I believe the correct response is A. Can be separated by physical means.
Answer:
The product will be MgF2 (Magnesium fluoride)
Explanation:
The reaction is beetween the reactants Mg and F2 is:
Mg + F2 --> MgF2 (product)
