<u>Answer: </u>54 molecules of water will be formed in the reaction.
<u>Explanation:</u>
A balanced chemical equation is one where all the individual atoms are equal on both sides of the reaction. It follows the law of conservation of mass.
For the given unbalanced chemical equation, the balanced equation follows:
![2C_8H_{18}+25O_2\rightarrow 16CO_2+18H_2O](https://tex.z-dn.net/?f=2C_8H_%7B18%7D%2B25O_2%5Crightarrow%2016CO_2%2B18H_2O)
We are given:
Molecules of
= 6
Molecules of
= 75
By the stoichiometry of the reaction:
If 2 molecules of
produces 18 molecules of water
So, 6 molecules of
will produce =
molecules of water
Hence, 54 molecules of water will be formed in the reaction.
Answer:
A. Energy is necessary for bond formation.
C. Breaking bonds takes energy.
D. When bonds are formed, energy is released.
Energy is always required for bond formation because when a chemical reaction occurs, either molecular bonds are broken or other bonds are formed to make different molecules. Energy is released during bond formation and is an exothermic process because bond formation represents a stable configuration and the energy lost is released as heat energy that makes it more stable. Breaking bonds takes energy and is an endothermic reaction because energy is absorbed to break bonds.
Hope that helps. x
Answer:
True
Explanation:
One of the strong proponent to support a hypothesis is its ability to be falsifiable. Also, a hypothesis must be testable. To truly test a hypothesis, one must be able to prove it wrong. If a hypothesis cannot be proven wrong, then it is a very good hypothesis and can be made a theory. A good hypothesis is one that cannot be falsifiable and can be easily tested in an experimental set up.