There's two sig figs: the 1 and the zero. The 10^-2 contributes no sig figs.
The volume of a gas that occupies 9 L at a temperature of 325K is 12.46L.
<h3>How to calculate volume?</h3>
The volume of a given gas can be calculated using the following Charle's law equation:
V1/T1 = V2/T2
Where;
- T1 = initial temperature
- T2 = final temperature
- V1 = initial volume
- V2 = final volume
- V1 = 9L
- V2 = ?
- T1 = 325K
- T2 = 450K
9/325 = V2/450
325V2 = 4050
V2 = 4050/325
V2 = 12.46L
Therefore, the volume of a gas that occupies 9 L at a temperature of 325K is 12.46L.
Learn more about volume at: brainly.com/question/2817451
The third one is the correct answer :)
Answer: Option (D) is the correct answer.
Explanation:
Enthalpy is defined as the amount of energy needed or removed from a substance. It is represented by
.
Basically, it is the change in enthalpy and it represents the difference between the energy used in breaking bonds and the energy released in formation of bonds in a chemical reaction.
It is also known as heat of reaction. When value of
is positive then it means heat is absorbed in the chemical reaction.
When value of
is negative then it means that heat is released in the chemical reaction.
Whereas entropy means the measure of randomness. It is represented by
. We cannot calculate entropy but we can measure the change in entropy.
Thus, we can conclude that all of the statements regarding the symbol "ΔH" are correct except it that can be called entropy change.