Question

One atom of element x wait 6 into 10 to power minus 23 gram number of mole of atom in 20 kg

Answer 1

weight of one atom of x = 6 x 10^-23 gm (given)

Weight of N atoms of x = 6.023 x 10^23 x 6 x 10^-23 = 36 gm

At.wt of element x = 36 gm

no.of moles of x in 20 kg = 20000/36 = 555.55 moles.