Question

How would you balance the following equation mg+o2 = mgo? Find the answer to this question and access a vast question bank customised for students.

Answer 1

To balance chemical equations, adjust the coefficients to get the same number of each element on both sides. The first reaction is balanced as 2Mg + O₂ → 2MgO, showing that two magnesium atoms react with one oxygen molecule to form two units of MgO.

Step-by-step explanation:

When balancing chemical equations, we ensure that the number of atoms for each element is the same on both the reactant and product sides. Here's how to balance the provided equations:

1. 2Mg + O₂ → 2MgO: Two magnesium atoms combine with one molecule of oxygen (which has two atoms) to form two units of magnesium oxide.
2. Ca + 2H₂O → Ca(OH)₂ + H₂: Calcium reacts with two molecules of water to produce one unit of calcium hydroxide and one molecule of hydrogen gas.
3. CuCO3 + H₂SO4 → CuSO4 + H₂O + CO₂: One unit of copper carbonate reacts with one unit of sulfuric acid to produce one unit of copper sulfate, water, and carbon dioxide.
4. CaCl₂ + Na₂CO3 → CaCO3 + 2NaCl: One unit of calcium chloride reacts with one unit of sodium carbonate to produce one unit of calcium carbonate and two units of sodium chloride.
5. C₁₂H₂₂O₁₁ + 12O₂ → 11H₂O + 12CO₂: One molecule of sucrose reacts with twelve molecules of oxygen to produce eleven molecules of water and twelve molecules of carbon dioxide.
6. BaCl₂ + H₂SO4 → BaSO4 + 2HCl: One unit of barium chloride reacts with one unit of sulfuric acid to produce one unit of barium sulphate and two units of hydrochloric acid.