plz help and show work! will up vote

1) How many signals do you expect in the 1HNMR spectrum of each of the following compounds? When looking at the chemical shift of compounds, it is helpful to know (by heart) a few approximate shifts for frequently occurring signals. When looking at 1HNMR spectra, the following ranges should be memorized: 02 ppm: Hydrogen attached to sp3-carbon 24.5ppm: Hydrogen attached to sp3-carbon close to electron withdrawing groups 4.56.5ppm: Hydrogen attached to alkene carbons (sp2C,HC=C)) 6.58.5 ppm: Hydrogen attached to aromatic carbons (sp2C,HAr) 1-6 ppm: Hydrogen on Oxygen (H-O) in alcohols, signal lines are often broad 1014 ppm: Hydrogen on Oxygen (H-O) in carboxylic acids, very broad signals. For 13CNMR chemical shifts, the following ranges have to be known: 0100 ppm: C with a sp3 hybridization 100220 ppm: C with sp2 hybridization (in alkenes, aromatic rings, carbonyl groups,..) 150180 ppm: C in carbonyl groups attached to O or N(O=COH,O=COR,O=CNR2) 190220 ppm: C in carbonyl groups of aldehydes and ketones (O=CH,O=CR)