MgO + Fe ----> Fe2O3 + Mg (unbalanced)
Balanced Answer: 3,2,1,3
Tip: First look for the most abundant element in the most complex molecule in this unbalanced one: which in this case is O in 'Fe2O3'
Then correct the number of O's at the other site: so filling in 3MgO
Then correct the other elements: 2Fe and 3Mg accordingly.
So having done this the reaction will be balanced by the coefficients:
3MgO + 2Fe ----> Fe2O3 + 3Mg
MgO + Fe ----> Fe2O3 + Mg
3MgO + 2Fe ----> Fe2O3 + 3Mg
MgO3 Fe2 = MgO3 Fe2
Balanced
Answer: 3,2,1,3
or
2,1,2
4MgO + 3Fe ---> Fe3O4 + 4Mg is the balanced equation.
2Mg + O2 ---> 2MgO is the balanced equation
2 AlCl3 + 3 Mg ----> 3 MgCl2 + 2 Al so need coefficients 2 and 3
The balanced reaction must be:
3MgO + 2Fe --> Fe2O3 + 3Mg
2MgO +2 Fe -> Fe2O2 + 2Mg
3 MgO plus 2 Fe equals Fe2O3 plus 3 Mg
4,1,2
What information can you determine from the coefficients in this balanced chemical equation? Mg + 2HCl → MgCl2 + H2
So you have 3 Cl on the left and 2cl on the right. First off you put a 2 in front of the AlCl3 to give you 6 Cl, and you put a 3 in front of the MgCl2 to also give you 6Cl on the right side. You then have to balance the Mg and Al, so put a 3 in front of the Mg on the left to give you 3Mg, and 2 in front of the Al on the right to give you 2Al. Your final, balanced formula is 3Mg + 2AlCl3 => 3MgCl2 + 2Al
That's an easy one to balance as long as know the products. Magnesium carbonate decomposes into magnesium oxide and carbon dioxide. Here's the equation: MgCO3 --> MgO + CO2. The equation requires no coefficients to balance; it balances itself.
AlCl3 is most effective in lowering the vapor pressure.
The synthesis equation for MgCl2 is Mg + Cl2 -> MgCl2. The decomposition reaction is MgCl2 - heat-> Mg + Cl2.
What information can you determine from the coefficients in this balanced chemical equation? Mg + 2HCl → MgCl2 + H2
MgO+2HCl = MgCl2+H2O
MgCl2
So you have 3 Cl on the left and 2cl on the right. First off you put a 2 in front of the AlCl3 to give you 6 Cl, and you put a 3 in front of the MgCl2 to also give you 6Cl on the right side. You then have to balance the Mg and Al, so put a 3 in front of the Mg on the left to give you 3Mg, and 2 in front of the Al on the right to give you 2Al. Your final, balanced formula is 3Mg + 2AlCl3 => 3MgCl2 + 2Al
That's an easy one to balance as long as know the products. Magnesium carbonate decomposes into magnesium oxide and carbon dioxide. Here's the equation: MgCO3 --> MgO + CO2. The equation requires no coefficients to balance; it balances itself.
AlCl3 is most effective in lowering the vapor pressure.
The synthesis equation for MgCl2 is Mg + Cl2 -> MgCl2. The decomposition reaction is MgCl2 - heat-> Mg + Cl2.
HCl + Mg -----> MgCl2 + H2
Ionic compounds are salts or oxides as NaCl, LiF, MgCl2, MgO, UCl4, ThO2, CsCl, CaCl2, FeCl3, AlCl3.
MgCl2 → Mg + Cl2
Mg + 2HCl --> MgCl2 + H2
Mg(OH)2+2NaCl