Answer :
The density of the sodium block is 1.0067 g/cm³.
First, calculate the volume of the sodium block:
Volume = length * width * height
Volume = 3.00 cm * 5.00 cm * 5.00 cm = 75.0 cm³
Next, calculate the density:
Density = mass / volume
Density = 75.5 g / 75.0 cm³ = 1.0067 g/cm³
Considering significant figures:
The given mass has 4 significant figures (75.5 g).
The given dimensions have 3 significant figures each.