Question

How many moles are present in 4.50 L of fluorine gas (F2) at Standard Temperature and

Pressure?

Answer 1

4.50 L gas of fluorine at STP contain 0.2 moles.

Step-by-step explanation:

Given data:

Volume of gas = 4.50 L

Number of moles F₂ gas = ?

Temperature of gas = standard = 273.15 K

Pressure of gas = standard = 1 atm

Step-by-step explanation:

Formula:

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K

T = temperature in kelvin

Now we will put the values in formula.

1 atm × 4.50 L = n × 0.0821 atm.L/ mol.K × 273.15 K

4.50 atm.L = n × 22.43 atm.L/ mol.

n = 4.50 atm.L / 22.43 atm.L/ mol.

n = 0.2 mol

4.50 L gas of fluorine at STP contain 0.2 moles.