24)
many types of energy are harnessed to create electricity. wind and solar power are examples of renewable sources, but petroleum is non-renewable. what fact explains why petroleum is considered non-renewable?
a) petroleum can only be generated from dinosaur excrement.
b) petroleum is manufactured from an element that no longer exists.
c) petroleum is only found in saudi arabia and they may refuse to sell to other countries.
d) although petroleum is a fossil fuel, created from plant and animal remains, the process takes many millions of years.

D) Although petroleum is a fossil fuel, created from plant and animal remains, the process takes many millions of years.

Explanation:

Renewable sources: These are resources that can be replenished overtime through natural process.These are the sources which never depletes completely.For example: bio mass energy, solar energy etc.

Non-Renewable sources: These are resources that cannot be replenished easily through natural process. These are the sources which are used in wise manner so that they do not get depleted. For example: coal, petroleum etc.

Thus petroleum is a fossil fuel generated from decomposition of plant and animal matter, which takes million of years and thus is a non renewable source.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.