Answer to Question #187379 in General Chemistry for Victor Solomon David

Question

Find the density of a hydrogen nucleus in grams per cubic centimeters,

given that the diameter of this nucleus is 1.0*10 pm and the mass is 1.67

* 10-24g. (Hint Volume of a sphere of radius r is far.)

Answer 1

$Diameter = 10 pm = 1× 10^{-11}M = 1×10^{-9}cm$

$Mass= 1.67×10^{-24}g$

$V= \frac{4}{3}× 3.14 × [\frac{1}{2}×(1×10^{-9})]^3 = 4.2×10^{-8}cm3$

$D= \frac{1.67×10^{-24}}{4.2×10^{-8}} = 4.04× 10^{-17}g/cm³$