A sample of an isotope of hydrogen has a mass of 1.96. Regarding % of abundance, this hydrogen sample is composed mostly of which isotope of hydrogen

Which of the following statements is not true? • a. covalent compounds have low melting and boiling points. • ob. covalent bonds between atoms of a compound are relatively weak compared to bonds between molecules. • c. covalent bonds occur between nonmetals. • d. covalent compounds are often gases or liquids.

Which best explains why an iceberg floats?

When a scientific theory has been tested and proved by the scientific community, it becomes a law