Name the following base: NaOH

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false