What do helium neon and argon have in common

the same atomic mass.

the same physical properties.

a full valence level of electrons.

The materials that are changed in a chemical reaction are called A. reactants B. coefficients C. products D. none of the above

At its lowest setting a centrifuge rotates with an angular speed of calculate the angular velocity

As an object falls in a gravitational field, its speed increases. This is an example of potential energy transforming into what? A. chemical potential energy B. electrical potential energy C. elastic potential energy D. kinetic energy

Which do you think will penetrate farther into a block of lead, x-rays, or gamma rays

A 6.0-g bullet leaves the muzzle of a rifle with a speed of 336 m/s. what force (assumed constant) is exerted on the bullet while it is traveling down the 0.83-m-long barrel of the rifle?

Carbon dioxide and water molecules in the atmosphere will absorb: a. infrared light. b. visible light. c. ultraviolet light. d. radio waves.

A car travels from town A to town B 70 km east, then to town C 60 km south, and then to town D 150 km west. Determine the resultant displacement of the car?

A person whose mass is 72 kg has a momentum of 700 kg/m/s (E). What velocity must this person be travelling at? (2 sig figs)

How many structures do prokaryotic cells have in common with the eukaryotic cells? 2 3 4 5

An astronaut throws a rock. the rock travels through outer space at a constant velocity. which statement applies to the motion of this rock? A - an unbalanced force is acting on the rock, causing it to accelerate.