(10 points) You have a sample of 63.5g of C2H6. How many moles of C2H6 are in the sample? Show work

What happens when an acid dissolves?

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

Why is retrograde motion an apparent motion