The incomplete table below shows selected characteristics of gas laws.

[tex]\[
\begin{tabular}{|c|c|c|c|}
\hline
Name & Variables & Constants & Equation \\
\hline
Boyle's law & pressure, volume & temperature, moles of gas & $P_1 V_1 = P_2 V_2$ \\
\hline
Charles's law & volume, temperature & pressure, moles of gas & $\frac{V_1}{T_1} = \frac{V_2}{T_2}$ \\
\hline
Gay-Lussac's law & pressure, temperature & volume, moles of gas & $\frac{P_1}{T_1} = \frac{P_2}{T_2}$ \\
\hline
Combined gas law & pressure, volume, temperature & moles of gas & $\frac{P_1 V_1}{T_1} = \frac{P_2 V_2}{T_2}$ \\
\hline
\end{tabular}
\][/tex]

What are the variables in Gay-Lussac's law?

A. pressure and volume
B. pressure, temperature, and volume
C. pressure and temperature



Answer :

To determine the variables in Gay-Lussac's law, let's first understand the basic principle of Gay-Lussac's law. According to this gas law:

"For a given amount of gas at a fixed volume, the pressure (P) of the gas is directly proportional to its absolute temperature (T)."

From this statement, we can identify the key variables and constants:
- The variables that change in Gay-Lussac's law are pressure (P) and temperature (T).
- The volume of the gas and the amount of gas (moles of gas) are kept constant.

Therefore, the variables in Gay-Lussac's law are:

- pressure
- temperature

Thus, when asked "What are the variables in Gay-Lussac's law?" the correct answer is:

- pressure and temperature

That's because these are the two factors that change while studying the relationship governed by Gay-Lussac's law, while the volume remains constant.