Explain the terms, Molar mass and Avogadro's number?
https://www.google.com/search?q=molar+mass&ie=utf-8&oe=utf-8
https://en.wikipedia.org/wiki/Avogadro_constant
Sure! Molar mass and Avogadro's number are important concepts in chemistry.
Molar mass refers to the mass of one mole of a substance. A mole represents a specific number of particles, which is 6.022 x 10^23. The molar mass is expressed in grams per mole (g/mol) and is calculated by adding up the atomic masses of all the atoms in a molecule.
To find the molar mass of a compound, you need to know the atomic masses of the individual elements. The atomic mass can be found on the periodic table, usually under the symbol of the element. For example, the atomic mass of carbon (C) is 12.01 g/mol, and the atomic mass of oxygen (O) is 16.00 g/mol.
To calculate the molar mass of a compound, you multiply the atomic mass of each element by the number of atoms of that element in the compound. For example, if you wanted to find the molar mass of water (H2O), you would multiply the atomic mass of hydrogen by 2 and the atomic mass of oxygen by 1, then add them together. The molar mass of water would be (2*1.01) + 16.00 = 18.02 g/mol.
Now, let's move on to Avogadro's number. Avogadro's number is a fundamental constant in chemistry and represents the number of particles (atoms, molecules, ions, etc.) in one mole of a substance. It is named after the Italian scientist Amedeo Avogadro.
Avogadro's number is approximately 6.022 x 10^23. This means that one mole of any substance contains exactly 6.022 x 10^23 particles. It doesn't matter whether these particles are atoms, molecules, or any other type of particle; the count remains the same.
Avogadro's number allows us to relate the mass of a substance to its number of particles. For example, if you have 1 mole of carbon atoms, you would have 6.022 x 10^23 carbon atoms, and the total mass would be equal to the molar mass of carbon. Similarly, if you have 1 mole of water molecules, you would have 6.022 x 10^23 water molecules, and the total mass would be equal to the molar mass of water.
In summary, molar mass is the mass of one mole of a substance, while Avogadro's number is the number of particles in one mole of a substance. Molar mass is calculated by adding up the atomic masses of the elements in a compound, and Avogadro's number is a constant that allows us to convert between mass and the number of particles.