Hi I was curious if you could show me how to do this problem and the steps I need to take to learn it. on a certain senate subcommittee there are five senator's. Arturo, Beau, Chloe, Dean, and Ellen. Three of these members are to be appointed to a subcommittee. How many possible subcommittees are there? ​

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? a. the wings are analogous structures that evolved differently and do not have a similar internal structure. b. the wings are homologous structures that evolved differently and do not have a similar internal structure. c. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. d. wings of bats are vestigial structures, but the wing structures of birds are not vestigial

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

How many moles are in 43.9 l of oxygen