What is the name of the molecular geometry (shape) for this Lewis Structure? (A) bent

(B) trigonal pyramidal

(C) trigonal planar

(D) tetrahedral

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

Most materials are not magnetic because their magnetism has worn off. their magnetic domains are arranged randomly. they lack magnetic fields. earth’s heat has destroyed their magnetism.

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