Advertisements
Advertisements
प्रश्न
What do the following symbol stand for?
2H2
Advertisements
उत्तर
2H2 stands for Two molecules of hydrogen.
APPEARS IN
संबंधित प्रश्न
Translate the following statement into a chemical equation and then balance the equation:
Carbon disulphide burns in air to give carbon dioxide and sulphur dioxide.
Translate the following statement into a chemical equation and then balance the equation:
Barium chloride reacts with zinc sulphate to give zinc chloride and barium sulphate.
Balance the following equation:
\[\ce{Na + O2 -> Na2O}\]
What is meant by a chemical reaction? Explain with the help of an example.
Express the following facts in the form of a balanced chemical equation:
“When a strip of copper metal is placed in a solution of silver nitrate, metallic silver is precipitated and a solution containing copper nitrate is formed”.
Write symbolic representation for the following word equation and balance them :
Calcium oxide + Water → Calcium hydroxide
Balance the following equation:
HNO3 + H2S → NO2 + H2O + S
What information does the following chemical equation convey?
Zn + H2SO4 → ZnSO4+ H2
The chemical reactions in which heat is liberated are called endothermic reactions.
In certain reaction an insoluble solid called precipitate is formed. State the colour and name of the precipitate formed in the following reaction involving addition of:
Iron [III] chloride to ammonium hydroxide.
