Define a molecular mass and mole​

Molar mass is the mass of a given substance divided by the amount of that substance, measured in g/mol. For example, the atomic mass of titanium is 47.88 amu or 47.88 g/mol. In 47.88 grams of titanium, there is one mole, or 6.022 x 1023 titanium atoms.

The mole (symbol: mol) is the base unit of amount of substance in the International System of Units (SI). It is defined as exactly 6.02214076×1023 particles, which may be atoms, molecules, ions, or electrons. ... The mole may also be used to measure the amount of atoms, ions, electrons, or other entities.

1.solid

2.carbon dioxide

3.helium

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .