What is the atomic mass of an element of two isotopes, one with mass= 64.23amu (26.0%); and one with mass= 65.32amu?

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat

Why does earth rotate? because earth is formed from cold gases collapsing due to gravity because the matter in the nebula that formed earth was spinning because earth forms more than 99% of the mass of the solar system because the hydrogen atoms inside the nebula fused to form helium

Acompound has the molecular formula c3h8. which class of organic compounds does it belong to?