Heat of combustion is a chemical property that can be measured.
Here is the answer of the given question
Answer:
Atoms are indivisible
I had a hard time finding this out.
Explanation: Dalton's atomic theory was the first complete attempt to describe all matter in terms of atoms and their properties. Dalton based his theory on the law of conservation of mass and the law of constant composition. The first part of his theory states that all matter is made of atoms, which are indivisible.
Answer: 9.08 L
Explanation:
To calculate the moles :

According to stoichiometry :
4 moles of
require = 3 moles of 
Thus 0.54 moles of
will require=
of 
Standard condition of temperature (STP) is 273 K and atmospheric pressure is 1 atm respectively.
According to the ideal gas equation:

P = Pressure of the gas = 1 atm
V= Volume of the gas = ?
T= Temperature of the gas = 273 K
R= Gas constant = 0.0821 atmL/K mol
n= moles of gas= 0.405

Thus 9.08 L of
at STP would be required