2. About how old are the black rocks at the bottom of the canyon? / ¿Acerca de la edad de las rocas negras del fondodel cañón? *

What pressure will be exerted by 0.675 moles of a gas at 25*c if it is in a 0.750-l container?

This large tectonic plate is bounded on three sides by whats know as the ring of fire. what is the name of this tectonic plate? a) pacific plate b) eurasian plate c) north american plate d) indo- australian plate plz it's science but there's no option for science so i picked chemistry

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.