Will mark brainliest! how is the atomic mass unit (amu) defined? a) 1/14 the mass of a nitrogen-14 atom b) 1/13 the mass of a carbon-13 atom c) 1/16 the mass of an oxygen-16 atom d) 1/12 the mass of a carbon-12 atom

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