Question

(a) How many grams are there in one amu of a material? 07.1996.023710"amce (b) Mole, in the context of this book, is taken in units of gram-mole. On this basis, how many atoms are there in a gram-mole of a substance?

Answer 1

(a) one atomic mass unit (amu) is defined as a mass exactly equal to one twelfth the mass of Carbon-12 atom, which equal to

$\mathbf{1 \, amu= 1.66056\times 10^{-24}\, g}$

(b) one gram moles of a substance contains Avogadro's number of particles. That's about $\mathbf{6.023\times 10^{23}\, particles}$