The common name of sodium chloride.

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

Stage in which a star’s outer layers have started to cool and grow outward?

The size (radius) of an oxygen molecule is about 2.0 ×10−10m. make a rough estimate of the pressure at which the finite volume of the molecules should cause noticeable deviations from ideal-gas behavior at ordinary temperatures (t= 300k ). assume that deviatons would be noticeable when volume of the gas per molecule equals the volume of the molecule itself.