what is the sterochemistry relationship between (2S,3R)-2,3-dibromopheptnoic acid and (2R,2S)-2,3-dibromoheptanoic acid

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

What is the chemical formula for the compound formed between sodium and flour one

Which type of intermolecular force is pbr3