Which of the following temperatures and pressure are used as standards for gases

The Standard Temperature and Pressure( STP ) for gases which refers to the nominal conditions of the atmosphere at normal sea level is said to 273 k or 0° Celsius for Temperature and the pressure is 1 atmospheric (atm) or 10⁵ pa

Explanation:

Gases are one of the four forms of matter which do not have defined shape and volume but they usually take the shape of the container that they are put into they can measured using three variables known as pressure,volume and temperature using gas laws equations.

wheres the answers ?

the real answer is b. scintillation counter