Final answer:
STP stands for Standard Temperature and Pressure in chemistry, with "ST" in "STP" correctly referring to Standard Temperature.
Step-by-step explanation:
In the context of chemistry, the expression that correctly determines "ST" in "STP" is Standard Temperature (Option C).STP stands for Standard Temperature and Pressure. It is defined as a temperature of 273 K (0°C) and a pressure of 1 atm (101.325 kPa). The purpose of defining STP is to establish a set of standard conditions so that properties of gases can be compared and reported accurately.
In the context of chemistry, the expression that correctly determines "ST" in "STP" is C. Standard Temperature. STP stands for Standard Temperature and Pressure, which is a set of conditions used to measure and compare the properties of gases. At STP, the standard temperature is defined as 273 K (0°C), and the standard pressure is typically considered to be 1 atm (101.325 kPa), although it can also be referred to as 100 kPa (0.986 atm).
STP is an important concept as it provides a reference point for calculating the behavior of gases under controlled conditions. This allows for comparisons of different gases or for predicting gas behavior in various situations.