How many molecules of O2 are produced from 82g of H2O?
2Na2O2 +2H2O= O2 +4NaOH

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

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?

How are isotopes of the same element alike?