Home › Junior Science Olympiad › Chemistry › Atoms and Molecules › Adding up the atomic masses of every atom in a m…
Adding up the atomic masses of every atom in a molecule gives its:
AMolecular number
BMolecular mass
CMolecular volume
DMolecular charge
Answer & Solution
Correct answer: B. Molecular mass
1. Each atom brings its own atomic mass.
2. The sum over one molecule is taken.
3. That sum is the molecular mass.
_Source: syllabus Science Class IX, Chapter 3, Atoms and Molecules._
Related questions
One mole of any substance contains how many particles, to four figures?The SI unit used for the amount of a substance is the:With Na as 23 and Cl as 35.5, the formula unit mass of common salt is:For sodium chloride, whose particles are ions, chemists calculate the:Using H as 1, N as 14 and O as 16, the molecular mass of nitric acid works out to:Hydrogen has atomic mass 1 u and oxygen 16 u. The molecular mass of water is:A group of atoms carrying a charge, such as sulphate, is called a:The combining capacity of an element, which tells how its atoms link up, is its: