Isotopes have the same but have a new atomic mass because they * number of electrons; have more or less neutrons number of protons; have more or less neutrons number of protons; have more or less electrons number of electrons; have more or less protons

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