Let us rewrite that equation.
2CO + 3HgCl2 >> 2CoCl + 3Hg
5.11 grams Mercury (1mole Hg/200.6g )(3mol HgCl2/3mol Hg)(271.5g/1mol )
= 6.92 grams of HgCl2
PbCl2 is the molecular formula (not chemical equation) of lead(II) chloride.
oxygen
Cu(NO3)2 an NaCl don't react, so there is not a balanced equation.
Na2CO3 + 2HCl -> 2NaCl + CO2 + H2O
ph balance
The formula unit of sodium chloride is NaCl.
PbCl2 is the molecular formula (not chemical equation) of lead(II) chloride.
oxygen
balance equation of barrium chloride to sodium chromate
s + p =
Sodium chloride doesn't react with zinc.
Aluminium + Lead Chloride --> Aluminiu, Chloride + Lead Al + 3PbCl --> AlCl3 + 3Pb
PbCl2 + Cu
KCl is the chemical formula unit of potassium chloride not a chemical equation.
Cu(NO3)2 an NaCl don't react, so there is not a balanced equation.
KI + NaCl = KCl + NaI
It is impossible to balance that equation.