The Bohr Model not only inadequately describes the energy of an electron, but it also inaccurately describes the shape of the electron's orbit. Name two types of orbitals that current atomic theory uses to identify spaces electrons can occupy snd describe the shape of each.

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?

Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?