Enter the appropriate symbol for an isotope of calcium-42 corresponding to the isotope notation azx.
express your answer as a chemical symbol using isotope notation.
40
20ca

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?

Which are forms of frozen water? check all that apply. dew frost hail rain sleet

Light waves can move through , but they travel fastest when they move through a(n) .