What would the chemical formula be for sodium oxide?

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

Slab pull” is a type of tectonic plate movement that occurs due to the forces of mantle convection and results in the subduction of the lithosphere true or false

A20 cm long spring is attached to a wall. the spring stretches to a length of 22 cm when you pull on it with a force of 100 n. what is the spring constant