The Heisenberg uncertainty principle states that . Multiple choice question.

A)
electrons of atoms in their ground states enter energetically equivalent sets of orbitals singly before they pair up in any orbital of the set

B)
it is impossible to simultaneously know the precise position and velocity of a particle

C)
two atoms of the same element must have the same number of protons

D)
no two electrons in the same atom can have the same set of four quantum numbers

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

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?