Draw the most stable chair conformation of D-mannose (The Fischer Projection is provided below, anomeric effect dominate in this case). CHO H clyclization -H -OH -OH CH₂OH the most stable chair comformation HO- HO H H

Q: xs HBr

A:

Alkanes and Cycloalkanes

Alkanes are saturated organic compounds which are made up of C and H atoms. Alkanes have the general formula of CnH2n+2. Alkane contains sp3 hybridized carbon atoms with four sigmas (σ) bonds & every hydrogen atom is connected with one of the carbon atoms. The size of the alkane could be determined by the number of carbon atoms located in it.