La masa de 2,24 L de sulfuro de hidrógeno (H₂S) en C. N. es: a) 1, 4
b) 2, 4
c) 3, 4
d) 4, 4
e) 5, 4

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

Apump contains 0.5 l of air at 203 kpa.you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump

Light waves can move through , but they travel fastest when they move through a(n) .