What is the rounded atomic mass for helium?

Is unpeeled potatoes a homogenous mixture? What country located at 29n latitude and 29elongitude? Example of a frameshift mutation of CGT AT gene? What would be the sturctural effects of addition of three successive nucleotides early in the gene? What is the flashpoint for magnesium? First form or type from which others are copied? How do Benzenes Napthanes and Hexanes effect the human body? What temperature does pine burn at? What did the Copernican war demonstrate? What accumulates in the pleural cavity when hemothorax is the diagnosis? Who invented the yardstick? How hot or cold is a Marine Estuary? Conducts electricity in solid state metal or nonmetal? What do scandium gallium and germanium have in common? What are the ingredients to after wax? Can you post signs on power line poles? What clothes would in the deciduous forest? A tiny cell that can grow into a new fern? Why do siphonophores explode? What vessel would be most likely lead to an air embolism?