Hey there!
Great question=)
Yes, this statement is true! Propane burns in air and it produces carbon dioxide and water.
I hope this helps;)
Explanation:
The reaction equation will be as follows.

Using bond energies, expression for calculating the value of
is as follows.

On reactant side, from
number of bonds are as follows.
C-C bonds = 1
C-H bonds = 6
From
; Cl-Cl bonds = 1
On product side, from
number of bonds are as follows.
C-C bonds = 1
C-H bonds = 5
C-Cl bonds = 1
From HCl; H-Cl bonds = 1
Hence, using the bond energies we will calculate the enthalpy of reaction as follows.

=
= -102 kJ/mol
Thus, we can conclude that change in enthalpy for the given reaction is -102 kJ/mol.
Answer:
The geological time from the longest to the shortest are:
- Eon,
- Era,
- Period and,
- Epoch.
Sodium and chlorine are combined sodium atom each lose an electron and chlorine atoms gain an electron to make sodium chloride