21) Which phrase describes the molecular polarity and distribution of charge in a molecule of carbon dioxide, CO2?

A)
polar and symmetrical

B)
polar and asymmetrical

C)
nonpolar and symmetrical

D)
nonpolar and asymmetrical

A molecule must be nonpolar if the molecule

A)
is linear

B)
is neutral

C)
has ionic and covalent bonding

D)
has a symmetrical charge distribution

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

Which explanation is true about what happens to a ray of light when it strikes a mirror? a. a light ray is transmitted toward a mirror at a certain angle. the light ray is then reflected by the mirror at an equal angle but in the opposite direction of the transmitted ray. b. an incident ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then reflected at an angle equal to the angle of incidence but on the opposite side of the perpendicular line. c. a reflecting ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then refracted at an angle equal to the angle of the reflecting ray and on the same side of the perpendicular line. d. an incident ray strikes a mirror at an angle with a line parallel to the mirror. the light ray is then transmitted at an angle equal to the angle of incidence but on the opposite side of the parallel line. you so much! : -d take the time to try and answer correctly.

Using the first volume and temperature reading on the table as v1 and t1, solve for the unknown values in the table below. remember to use the rules of significant figures when entering your numeric response.