Steam in a piston/cylinder initially at 0.40 mpa and 180°c is heated to 400°c at
constant pressure. calculate (a) internal energy change (∆u), (b) heat added (q) and (c)
work done (w) per kilogram of steam in the cylinder. do not assume that steam is an
ideal gas.

The ozone molecule o3 has a permanent dipole moment of 1.8×10−30 cm. although the molecule is very slightly bent-which is why it has a dipole moment-it can be modeled as a uniform rod of length 2.5×10−10 m with the dipole moment perpendicular to the axis of the rod. suppose an ozone molecule is in a 8000 n/c uniform electric field. in equilibrium, the dipole moment is aligned with the electric field. but if the molecule is rotated by a small angle and released, it will oscillate back and forth in simple harmonic motion.what is the frequency f of oscillation?

In one or two grammatically correct sentences, write a definition for the term molecule geometry

Who discovered a pattern to the elements in 1869?