If the heat of combustion of hydrogen is -285.8kJ,
...
If the heat of combustion of hydrogen is -285.8kJ,
What is the heat of formation of water?
+571.6 kJ
-571.6 kJ
-285.8 kJ
+285.8 kJ
Correct answer is C
No explanation has been provided for this answer.
The drying agent suitable for drying ammonia is ...
Which of the following substances can be classified as heavy chemicals? ...
Which separation technique is routinely applied in the petroleum industry? ...
Which of the following reactions is common to all hydrocarbones? ...
Which of the following statements about endothermic reaction is correct? ...
When ethene gas reacts with chlorine gas to form 1, 2-dichloroethene, the reaction is called? ...
Which of the following compounds reacts readily with sodium to liberate hydrogen? ...