Agas-tight syringe is filled to 45.0 ml, at a pressure of 2.33 atm and 25.0°c, with a gaseous diatomic element. if the mass of the syringe increases by 0.137 g when filled, which diatomic element is in the syringe?

a. h2
b. oxygen
c. f2
d. no right answer.

The answer to your question is: d. No right answer

Explanation:

Data

V = 45 ml = 0.045 l

P = 2.33 atm

T = 25 °C = 298°K

m = 0.137 g

R = 0.082 atm l / mol°K

Formula

                   PV = nRT

Process

                 n = PV / RT

                 n = (2.33)(0.045) / (0.082)(298)

                 n = 0.1049 / 24.43

                 n = 0.0043

a) For hydrogen

                           1 g 1 mol

                           0.137 g  x

                          x = 0.137 mol of H2   The gas is not hydrogen

b) Oxygen

                          16 g of O2 1 mol

                          0.137 g        x

                          x = (0.137 x 1) / 16

                          x = 0.0086 mol of O2  The gas is not Oxygen

c) Fluor

                         19 g of F  1 mol

                         0.137 g       x

                         x = (0.137 x 1) / 19

                         x = 0.0072 mol of F      The gas is not Fluor

the cold front replaces the warmer air at the ground level changing the wind to be breezy and denser.there is also an immediate drop in the temperature.