The density of helium gas at 0.0 ◦c is 0.16 kg/m3 kg/m3. the temperature is then raised to 100.6 ◦c, but the pressure is kept constant. assuming that helium is an ideal gas, calculate the new density of the gas. answer in units of kg/m3.

The dipole moment of the water molecule (h2o) is 6.17x10^-30 c.m. consider a water molecule located at the origin whose dipole moment p points in the +x-direction. a chlorine ion ( of charge-1.60x10^-19c , is located at x=3.00x10^-9m . assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used. a) find the magnitude of the electric force that the water molecule exerts on the chlorine ion. b) what is the direction of the electric force. -x-direction or +x-direction c) is this force attractive or repulsive?