6) What is the final temperature when a balloon filled with 0.250 g of helium gas at 25.0°C releases 19.5 J of energy? The specific heat of helium is 5.19 g.°C

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

Many ionic compounds and a few highly polar covalent compounds are because they completely ionize in water to create a solution filled with charged ions that can conduct an electric current.

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by