please help me with these for a review question!

Convert each of the compounds below to a chair picture and then show the major organic product as a chair picture and a bond-line picture. Draw (3S,4S) 3-bromo-4-methylhexane as a 3d bond-line structure. Then show the final product if that compound is reacted with ethoxide. Will the ethyl groups in the final product be cis or trans to each other? Draw a 3d bond-line structure for S-3-chloroheptane. Then react it with the nucleophile shown on the arrow below and draw an accurate 3d bond-line structure of the product. What is the absolute configuration of the product? final product