Question

The weight of one atom of uranium is 238 amu its actual weight in gm is?

Answer 1

Step 1:

Weight of 1 atom of uranium = 238 amu

Weight of one mole of uranium = 238 grams

Hence number of atoms in 1 mole of uranium is =

$6.023\times 10^{23}$

$Thusweightof1atomofuraniumis$

$Wightof1atomofuraniumingrams=\left(\frac{238}{6.023\times {10^{23}}^{}}\right)=39.51\times {10}^{-23}$

$Actualweightofanatomofuraniumis39.51\times {10}^{-23}$

$or3.95\times 10^{-22}$