The answer is dissolved salts
Explanation:
Given that,
Mass of metal cube, m = 20 g
Volume of cube, V =5 mL
We need to find the density of the cube. Mass per unit volume equals density.

So, the density of the cube is 4 g/ml.
We know that the density of Aluminium is 4 g/mL.
So, the cube is not Aluminium cube.
Answer:
A telescope, printing press, and microscope
Explanation:
Answer:
Nitrogenous oxide/ nitrogen oxide
Explanation:
N2O is nitrogen oxide