The lighter the atom the, the less mass in one mole of that atom
True
False
The correct answer and explanation is:
The correct answer is True.
The statement is accurate because the mass of an atom is directly related to its atomic weight or atomic mass, which determines the mass of one mole of that atom. The atomic weight is typically measured in atomic mass units (amu), and one mole of atoms of any element contains Avogadro’s number (approximately 6.022×10236.022 \times 10^{23}) of atoms.
If the atom is lighter, meaning it has fewer protons and neutrons in its nucleus, the atomic mass will be lower. For example, hydrogen, which is the lightest element, has an atomic mass of about 1 gram per mole. In comparison, heavier elements like uranium have atomic masses on the order of 238 grams per mole.
When you take one mole of any element, the mass in grams of that mole is equivalent to the atomic mass of the element in atomic mass units. So, for lighter atoms like hydrogen or helium, the mass of one mole of those atoms will be smaller compared to heavier atoms like iron or uranium.
This relationship between atomic mass and molar mass is fundamental in chemistry, especially when performing stoichiometric calculations, where you convert between moles of reactants and products. Molar mass helps chemists understand how many grams of a substance are in a mole, and knowing the atomic mass allows them to calculate how much of a lighter or heavier substance is involved in a reaction.
In conclusion, the mass of one mole of an atom depends on the atomic weight of the element. The lighter the atom, the less mass there is in one mole of that atom, making the statement true.