Guys I need help with this ASAP! An atom of Iron has a mass of 56 atomic mass units. What is the number of protons and the number of neutrons in the nucleus?

An excess of lithium oxide undergoes a synthesis reaction with water to produce lithium hydroxide li2o+h2o→2lioh if 1.05 g of water reacted, what is the theoretical yield of lithium hydroxide? a) 5.83 x 10–2 g lioh b) 1.17 x 10–1 g lioh c) 2.79 x 100 g lioh d) 1.40 x 100 g lioh

How many absorptions would you expect to observe in the 13c nmr spectra of the following molecules? a) 3-chloropentane b) cis-4-methyl-2-pentene

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .