When Magnesium reacts with oxygen, heat is
...When Magnesium reacts with oxygen, heat is
absorbed and the reaction is endothermic
evolved and the reaction is endothermic
evolved and the reaction is exothermic
absorbed and the reaction is exothermic
Correct answer is C
The Magnesium actually reacts with oxygen in the air, is burnt and produces a bright light. The bright light emits a lot of heat so the reaction is exothermic.
What number of moles of oxygen would exert a pressure of 10 atm at 320 K in an 8.2 dm\(^{2}\) c...
Tetraoxosulphate (lV) acid is described as strong acid because it is highly ...
The high boiling point of hydrogen fluoride can be explained in terms of ...
Which of the following salts in aqueous solution will have a pH greater than 7? ...
A molecular of phosphorus is ...
In the preparation of salts, the method employed will depend on the? ...