Answer:
From the image the answer is 24.
I think it is the gas and the heat in it
Answer:
A
Explanation:
lies to the left of periodic table
What of the gasses is N and the flame changes it's color from Orange to blue
Answer:

Explanation:
Given that,
The dimension of a square chunk of plastic is 5 cm × 5 cm × 5 cm
Mass, m = 200 g
We need to find its density
Density = mass/volume
It will form a cube. It volume = side³
So,

Hence density is 