Answer:
d = 7.88 g/ cm³
Explanation:
Given data:
Radius of hydrogen atom = 37 pm
Mass of hydrogen atom = 1.67 × 10⁻²⁴ g
Density of hydrogen atom = ?
Solution:
Density:
Density is equal to the mass of substance divided by its volume.
Units:
SI unit of density is Kg/m3.
Other units are given below,
g/cm3, g/mL , kg/L
Formula:
D=m/v
D= density
m=mass
V=volume
Symbol:
The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.
Volume:
(4/3) 3.14 × r³
1.33×3.14 × (37pm)³
4.19×50653 pm³
211537.1 pm³
211537.1/9.223 ×10¹⁸
2.12 ×10⁻²⁵ cm³
Now we will determine the density.
d = m/v
d = 1.67 × 10⁻²⁴ g / 2.12 ×10⁻²⁵ cm³
d = 7.88 g/ cm³
