Question

A sample of propane, C3H8, occupies 1.73 mL when the pressure is 320 torr at 30 C. What is the volume at STP

Answer 1

The volume of the sample of propane at STP is 0.62 mL.

What is volume?

Volume is the amount of space that a substance or object occupies.

To calculate the volume of gas at STP, we apply the formula below.

Formula:

• PV/T = P'V'/T'................. Equation 1

Where:

• P = Initial pressure of gas
• V = Initial volume of gas
• T = Initial temperature of gas
• P' = Standard pressure (SP)
• T' = Standard temperature (ST)
• V' = Volume of gas at STP.

Make V' The subject of the equation

• V' = PVT'/P'T.............. Equation 2

From the question,

Given:

• P = 320 torr
• V = 1.73 mL
• T = 30 °C = (30+273) K = 303 K
• P' = 760 torr
• T' = 273 K

Substitute these values into equation 2

• V' = (320×1.73×273)/(760×303)
• V' = 0.62 mL

Hence, the volume of the sample of propane at STP is 0.62 mL.
Learn more about volume here: brainly.com/question/26507715