A mole of HBr is 4.2 mol.
One mole of a substance is the same as 6.022 × 10²³ units of that substance (such as atoms, molecules, or ions). The wide variety of 6.022 × 10²³ is referred to as Avogadro's variety or Avogadro's constant.
The mole, symbol mol, is the SI base unit of quantity of substance. the quantity of the substance is a measure of how many fundamental entities of a given substance are in an item or sample. The mole is defined as containing precisely 6.02214076×10²³ standard entities.
Moles measure the wide variety of particles, no longer the mass. So both bags include 3 moles. A mole is simply a unit of the range of factors.
Here, we are going to calculate the volume of HBr needed to prepare 3.50 L of 1.20 M HBr acid.
Molarity of HBr acid = 1.20 M
The volume of HBr =3.50 L
Therefore, mole of HBr = 3.50 L* 1.20 mol/l = 4.2 mol
Learn more about mole here https://brainly.com/question/15374113
#SPJ4
