Amolecule of unknown structure has a molecular formula of c9h8o2 . in the infrared spectrum there are absorptions at 1761, 1145, and 761 cm−1. in the c13 nmr spectrum, there are absorptions at δ 168.4, 152.0, 128.2, 128.0, 124.3, 122.8, 116.8, 29.1 and 23.6. in the h1 nmr spectrum, between δ 7.2 and 7.0, there is a complicated pattern that integrates to 4 protons. additionally, there are triplets at δ 3.0 and 2.7, each integrating to 2 protons. identify the structure of the unknown.

Which of the following best describes the formation of plasma?

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

What type of energy do chemical bonds have? what type of energy is it converted to during chemical reactions? question 15 options: chemical bonds have kinetic energy, which is converted to potential energy during chemical reactions. chemical bonds have electric energy, which is converted to potential energy during chemical reactions. chemical bonds have heat energy, which is converted to kinetic energy during chemical reactions. chemical bonds have potential energy, which is converted to heat energy during chemical reactions.