What is the volume of 9.5 g fluorine gas, F2, at STP?

5.6L

Explanation:

At STP, the pressure and temperature of an ideal gas is

P = 1 atm

T = 273.15k

Volume = ?

Mass = 9.5g

From ideal gas equation,

PV = nRT

P = pressure

V = volume

n = number of moles

R = ideal gas constant = 0.082J/mol. K

T = temperature of the ideal gas

Number of moles = mass / molar mass

Molar mass of F2 = 37.99g/mol

Number of moles = mass / molar mass

Number of moles = 9.5 / 37.99

Number of moles = 0.25moles

PV = nRT

V = nRT / P

V = (0.25 * 0.082 * 273.15) / 1

V = 5.599L = 5.6L

The volume of the gas is 5.6L