Reaction:

Magnesium is a stronger reducing agent than copper and is thus able to reduce copper(II) oxide.
Products of the reaction: Magnesium oxide and metallic copper.
Answer:
The number of proton of magnisium = 12
The compound name of Ba3N is Barium Nitrate.
<u>Explanation</u>:
- A compound name is a combination of two or more than two elements that are bonded together giving a compound form.
- Barium Nitrate is a combination of two elements barium and nitrate which tends to bond together forming a compound.
- Barium nitrate is the inorganic compound with the chemical formula Ba(NO₃)₂. It is colorless, toxic, and water-soluble.
- It is more dangerous when it is exposed to fire, there will be an explosion irritating to eye and skin. Toxic oxides of nitrogen produced in fires.
- It has a molecular weight of 261.34 g / mol and has a molecular formula of Ba(NO₃)₂.
Answer:
Mass of copper oxide: 10g
Mass of copper: 8.882g
Mass of oxygen: 1.118g
<u> Cu</u> <u>O</u>
8.882 1.118
Divide by
8.882÷63.5 1.118÷16
0.14 0.07
Divide by the lowest number 0.14/0.07 0.07/0.07
2 1
Check the ratio now, Cu has 2 atoms and O has 1 atom .
The formula is 