how many grams of NaC1 would you dissolve in water to make a 50 mM NaC1 solution with 500mL final volume?

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

What is the mass of 0.46 mol of mgcl2

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?