Author Question: A sealed 89-m3 tank is filled with 6000 moles of oxygen gas (O2 ) at an initial temperature of 270 ... (Read 415 times)

MirandaLo · **on:** Jul 29, 2018

A sealed 89-m3 tank is filled with 6000 moles of oxygen gas (O2 ) at an initial temperature of 270 K. The gas is heated to a final temperature of 350 K.

The ATOMIC mass of oxygen is 16.0 g/mol, and the ideal gas constant is R = 8.314 J/mol K = 0.0821 L atm/mol K. The initial pressure of the gas is closest to
A) 0.15 MPa.
B) 0.17 MPa.
C) 0.19 MPa.
D) 0.13 MPa.
E) 0.11 MPa.

Question 2

The current through two identical light bulbs connected in series is 0.25 A. The voltage across both bulbs is 110 V. The resistance of a single light bulb is

A) 22 ohms.
B) 44 ohms.
C) 220 ohms.
D) 440 ohms.
E) none of the above