What is a mole? How many moles of NaOH are present in 160 g of it? What is a mole and molar volume?
Answers
Mole, also spelled mol, in chemistry, a standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other specified particles.
As we know,
Number of moles =
M
w
So, the number of moles of sodium hydroxide =160/40=4
Answer:
The mole is a unit of measurement for amount of substance. It is defined as the amount of any chemical substance that contains as many elementary entities e.g.atoms, molecules, ions, electrons or photons like atoms present in 12 gm of pure carbon with relative atomic mass 12. It has the unit symbol mol.
Answer = 160 g of Sodium hydroxide. 160 g of Sodium hydroxide = 1 mol × 160 / 40 = 4 mol. Hence " 4 moles contained in 160 g of sodium hydroxide.
The molar volume is that the volume occupied by one mole of a substance which may be an element or a compound at degree Centigrade and Pressure (STP). ... Avogadro's law states that equal volumes of all gases at an equivalent temperature and pressure contain equal numbers of particles.