The ion N³⁻ is called the azide ion. In its neutral state, it occurs as the element Nitrogen. The atomic number of Nitrogen is 7. When it turns into an anion (negatively charged ion), it gains 3 more electrons. That's why its net charge becomes -3. It means that the protons is still 7, but the electrons are now 10.
Overall charge = +7 + -10 = -3
Molecular mass of H2O is: 16+2*1=18
so moles of 40g of H2O is: 40/18=2.22
It is a combustion reaction because when methane burns with oxyzen it produces carbon dioxide,water and heat and light.
The potassium will donate one of its valence electrons
Answer:
Sorry how no this equation guys
