CaCO3(marble)+4HNO3-->CaO+4NO2+2H2O+CO2+O2
When sodium is added to nitric acid, a chemical reaction occurs to form sodium nitrate and hydrogen gas. The balanced chemical equation for this reaction is 2Na + 2HNO3 -> 2NaNO3 + H2. Sodium nitrate is a white, crystalline solid while hydrogen gas is a colorless, odorless gas.
The chemical equation for the reaction when copper is added to aluminum sulfate is: 3Cu + 2Al2(SO4)3 -> 3CuSO4 + 2Al
a balanced equation has equal numbers of each type of atom on each side of the equation.
FeCl+H2(g)
A coefficient.
Coefficients can be added in front of the chemical formulas to balance a chemical equation. These coefficients represent the number of molecules or atoms of each substance participating in the reaction. Balancing ensures that the same number of each type of atom is present on both sides of the equation.
For the chemical equation, simply replace the name of each compound with its chemical formula: NaOH + FeCl2 --> Fe(OH)2 + NaCl
I think moles
The chemical equation for the reaction that occurs when zinc metal is added to a solution of copper II chloride is: Zn + CuCl2 -> Cu + ZnCl2.
Ca + H2SO4 --> CaSO4 + H2
Fe+H2SO4=FeS+H2O
2Na (s) + O2 (g) ---> 2Na2O (s)