The question is incomplete , complete question is:
Hydrogen, a potential future fuel, can be produced from carbon (from coal) and steam by the following reaction:
Note that the average bond energy for the breaking of a bond in CO2 is 799 kJ/mol. Use average bond energies to calculate ΔH of reaction for this reaction.
Answer:
The ΔH of the reaction is -626 kJ/mol.
Explanation:
We are given with:
ΔH = (Energies required to break bonds on reactant side) - (Energies released on formation of bonds on product side)
The ΔH of the reaction is -626 kJ/mol.
D IS THE ANSWER TO YOUR QUESTION
Explanation:
It is known that molarity is the number of moles present in a liter of solution.
Mathematically, Molarity = 
Hence, calculate the molarity of given solution as follows.
Molarity of citric acid = 
= 
= 0.173 M
As citric acid is a triprotic acid so, upon dissociation it gives three hydrogen ions.
Normality = Molarity × no. of hydrogen or hydroxide ions
= 0.173 × 3
= 0.519 N
Thus, we can conclude that molarity of given solution is 0.173 and its normality is 0.519 N.
The answer is B. Molecules move more quickly as temperature increases.
When Allmond molecular motion stops, that is considered absolute zero. That does not mean that it cannot get colder, disapproving A.
C is just wrong.
D says when molecular motion stops the temperature STARTS to decrease, it was decreasing before it got there.
Answer:
Channeling often occurs in a packed tower This phenomenon takes place when the. ... ------------EFFECT IN TOWERS AND COLUMNS Towers or columns are the ... instruments such as HPLC(high performance liquid chromatography-columns )
Explanation:
