Answer:
2H2(g) + O2(g) --------> 2H2O(g). ∆H= -242KJmol-1
Explanation:
A thermochemical equation is a balanced chemical reaction equation that includes the physical states of all reactants and products and the energy change.
As shown above, hydrogen reacted with oxygen in the gas phase to form water, an energy of 242KJ was evolved and we are required to put this in a thermochemical equation using the least coefficients.
Hydrogen reacts with oxygen to form water in the gas phase in a least ratio of 2:1 as shown in the answer.
The term 'energy evolved' in the question means that the reaction is exothermic and energy is evolved. Hence ∆H is negative as shown.
A. helium, neon and argon, because they are in the same group or column
Answer:
Kelvin, Celsius, Fahrenheit
Explanation:
See my other answer for an explanation.
If that is your picture, then the answer is that
Geometry A is trigonal planarand Geometry B is trigonal pyramidal
Answer:
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