CaO+B2O3______Ca (BO2)2
When heated borax undergoes various transitions,first it loses water molecules and swells,then it turns into a transparent liquid solidifying to for a glass like structure called borax beads. Na2B4O7.10H20 -->heating Na2B4O7 -->heating 2NaBO2 + B2O3 BORAX SODIUM BORIC METABORATE ANHYDRIDE
It depends on the reaction temperature. At 298K, the heat of reaction is 179 kJ/mol
The Chemical formula for lime is CaO. This comes from Limestone (CaCO3). As Limestone is heated up to 1000 degrees, it lets of Carbon Dioxide and becomes CaO, or quicklime.
When CaCO3 (calcium carbonate) is heated, it decomposes to form CaO (calcium oxide) and CO2 (carbon dioxide) gas is released.
When marble (calcium carbonate) is heated, it undergoes thermal decomposition to produce calcium oxide (quicklime) and carbon dioxide gas. The chemical equation for this reaction is: CaCO3(s) -> CaO(s) + CO2(g).
The chemical equation to represent the reaction between borax (Na2B4O7) and CaO (calcium oxide) when heated is: Na2B4O7 + CaO → CaB4O7 + Na2O In this reaction, borax and calcium oxide react to form calcium tetraborate (CaB4O7) and sodium oxide (Na2O) as the products.
It will decompose according to: CaCO3(s) --> CaO(s) + CO2
When heated borax undergoes various transitions,first it loses water molecules and swells,then it turns into a transparent liquid solidifying to for a glass like structure called borax beads. Na2B4O7.10H20 -->heating Na2B4O7 -->heating 2NaBO2 + B2O3 BORAX SODIUM BORIC METABORATE ANHYDRIDE
Borax is harmless.
Cao Cao's invasion of Xu Province happened in 193.
When heated borax undergoes various transitions,first it loses water molecules and swells,then it turns into a transparent liquid solidifying to for a glass like structure called borax beads. Na2B4O7.10H20 -->heating Na2B4O7 -->heating 2NaBO2 + B2O3 BORAX SODIUM BORIC METABORATE ANHYDRIDE
On heating, borax first loses water molecules and swells up.On further heating it turns into a transparent liquid, which solidifies into glass like material known as borax bead. Na2B4O7.10H2O -----heat------>Na2B4O7------heat------>2NaBO2+B2O3 Sodium Boric metaborate anhydride
Tran Cao rebellion happened in 1516.
Rebellion of Cao Qin happened in 1461.
A thermal decomposition reaction occur:CaCO3 = CaO + CO2
It depends on the reaction temperature. At 298K, the heat of reaction is 179 kJ/mol
It is a chemical change, because the borax reacts to the heated water.