Question

what is molecular mass?
what is elements? ​

Answer 1

Answer:

The molecular mass is the mass of a given molecule: it is measured in daltons. Different molecules of the same compound may have different molecular masses because they contain different isotopes of an element.

an element is a pure substance consisting only of atoms that all have the same numbers of protons in their atomic nuclei.

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Answer 2

Explanation:

Molecular mass (a number with no unit) of something is numerically equal. Molar mass of something (it must be composed of identical constituent particles, usually molecules) is the mass of as many particles as there are in 12 grams of C-12.

An element is an ATOM or aggregate of atoms all of which have the same number of protons. In pure form, they will also have the same number of electrons. Each element has its own unique number of protons. For example, hydrogen always has one proton, helium always has two and lithium always has three.