Gold, as it has the unique characteristic yo
What is the percent composition by mass of oxygen in magnesium oxide, MgO?
Answer: 39.7 percent
Answer:
One electron is the answer if you need work i can show
Physical change
iron nail have high melting point, thus, when it is heated, it will not melt very easily.
chemical change
iron nail can rust due to the exposure to the air(oxygen). iron in the nail and oxygen in the air will react together to form iron oxide(rust).
furthermore, the reaction is irreversible.
Answer:
3 atoms
Explanation:
2 hydrogen atoms and 1 oxygen atom
