What would be the force of a 500 kg car that is making a donut at 2 m/s with a radius of 4 meters?

What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?

What woukd most likely be the transmittance at a 0.70 m solution of solute a? a) 7.6%b) 1.1%c)4.0%d)4.6%

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?