Answer:
The density of substance A is more.
Step-by-step explanation:
Given that,
The density of a substance is 5.4 g/cm³.
The density of another substance is 5.4 kg/m³.
We need to find a substance that has a greater density.
First, we make the units the same.
1 kg = 1000 g
1 m = 100 cm
5.4 kg/m³ = 0.0054 g/cm³
Now, if we compare 5.4 g/cm³ and 0.0054 g/cm³, we find that the density of substance A is more.