The heat of solution of sodium nitrate is 5.03 kcal/mol solute in 200g of water. Calculate the quantity of heat that would be absorbed if 50.0 g of sodium nitrate dissolves in 200g of water. What would be the change in the temperature of water? ( NOTE : specific heat of water = 0.001 kcal/g • °C)

Which element would mostly likely have an electron affinity measuring closest to zero

The valence of aluminum is +3, and the valence of the chlorine is -1. the formula fir the aluminum chloride is correctly written as

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?