How is a Fischer projection formula drawn?

Represent the ring structure of glucose using Fischer projection formulae.

Give the Fischer projection formulae of Saccharic acid

Draw structure of enantiomers of lactic acid using Fischer projection formulae.

Draw the Fischer projection formula of two products obtained when compound (A) reacts with OH^(o.) by S_N1 mechanism.

Give the Fischer projection formulae of Glucose

Give the Fischer projection formulae of Gluconic acid

Draw the Fischer projection formula of the products formed when compound (B) reacts with OH^(o.) by S_N2 mechanism.

Draw the simple Fisher projection formulae of D- (+)- glucose and D-(-) fructose)

Give the Fischer projection of alpha-amino acid.

Draw two newman projection formulae and two sawhorse formulae for the propane molecule .