Question

An empty water bottle is full of air at 15°C and standard pressure. The volume of the bottle is 0.500 liter. How many moles of air are in the bottle?

Answer 1

.0211

Step-by-step explanation:

Answer 2

Answer: 0.0211 moles of air are present inside the bottle

Step-by-step explanation:

Volume of the bottle = 0.500 L

Standard Pressure exerted by the air = 1 atm

Temperature of bottle in which air is present = 15 °C= 288 K(0 °C = 273 K)

Assuming air inside the bottle is behaving ideally:

PV=nRT

`1 atm* 0.500 L=n* 0.0820 L atm/mol K* 288 K`

`n=(1 atm* 0.500 L)/(0.0820 L atm/mol K* 288 K)`

n = 0.0211 moles

0.0211 moles of air are present inside the bottle