What is Lewis acid and Lewis base? give examples​

Draw two cyclic constitutional isomers of cis-1

Pinene is an unsaturated hydrocarbon found in pine resin. if pinene has m+ = 136 and contains 1 double bond(s) and 2 ring(s); what is its molecular formula? enter the formula in the form ch first, then all other atoms in alphabetical order; do not use subscripts. the formula is case-sensitive

Which of the following is a chemical property of water at 4 c