The incomplete table below shows selected characteristics of gas laws.
name
variables
constants
equation
?
?
?
pv = k
charles’s law
?
?
v = kt
?
temperature, pressure
?
p = kt
combined gas law
pressure, temperature, volume
?
?
which constants would most likely be filled in the first row of the table?
temperature and moles of gas
volume and temperature
pressure and volume
pressure and moles of gas

I can't seem to tell which one is the first row since there is no table. So, I'll just fill in all the question marks for you.

Name: Boyle's Law
Variables: pressure and volume
Constants = gas constant and temperature
PV = k

Charles’s law
Volume and temperature
Gas constant and pressure
V = kT

Gay-Lussac's Law
Temperature, pressure
Gas constant and volume
P = kT

Combined gas law
Pressure, temperature, volume
Gas constant and moles of gas
PV=kT

The answers are those in bold letters for each section. Just see all of the sections so that you can see which one corresponds to the first row.

Talc (french chalk) is the ingredient