Amolecule of an unsaturated hydrocarbon must have(1) at least on single carbon-carbon bond
(2) at least one multiple carbon-carbon bond
(3) two or more single carbon-carbon bonds
(4) two or more multiple carbon-carbon bonds

Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.

Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.

Which statement accurately represents the arrangement of electrons in bohr’s atomic model?