Hydrogen dioxide
Trihydrate - basically 3 molecules of water (just as dihydrate is 2H2O) Unless you're referring to the molecule 3H2O used in measuring the total body water - in that case it's 'tritiated water'
2nacl+2h2o
The chemical formula for calcium sulfate dihydrate is CaSO4 · 2H2O. It can also be written as CaSO4 · 2H2O.
Crystallised BaCl2·2H2O will be de-hydrated when heated, loozing 2H2O per mol BaCl2·2H2O
Water can be broken down to oxygen and hydrogen and hydrogen can be ignited in oxygen to form water. 2H2O --> 2H2 + O2 (takes energy) 2H2 + O2 --> 2H2O (releases energy)
Hydrogen peroxide ... but its written as H2O2.
H2so4+2koh=k2so4+2h2o
When sodium hydroxide reacts with sulfuric acid, a neutralization reaction occurs to form sodium sulfate and water. The balanced chemical equation for this reaction is: 2NaOH + H2SO4 -> Na2SO4 + 2H2O. The reaction is exothermic, meaning it releases heat.
Two water molecules (2H2O) have four oxygen atoms in total.
2H2O represents two molecules of water, which is in liquid phase at room temperature and pressure.
H2SO4 + 2NaOH ------------> Na2SO4 + 2H2O H2SO4 + 2NaOH ------------> Na2SO4 + 2H2O H2SO4 + 2NaOH ------------> Na2SO4 + 2H2O
One molecule of Oxygen Gas (O2) combines with two molecules of Hydrogen Gas (2H2) to form two molecules of water 2H2O. O2+2H2=> 2H2O There are the same numbers of H's and O's either side of the = meaning the equation is balanced, in respect of the fact that Oxygen and Hydrogen Gas have diatomic molecules (2 atoms stick together)