Phase transition is when a substance changes from a solid, liquid, or gas state to a different state. Every element and substance can transition from one phase to another at a specific combination of temperature and pressure.
Answer:
Explanation:
You can identify an unknown substance by measuring its density and comparing your result to a list of known densities. Density = mass/volume. Assume that you have to identify an unknown metal.
A substance in the air which can change the surface of limestone would be oxygen, O2.
Answer:
Actually there is no answer but there is so much theories but people mostly says Bug Bang
Answer:
Abs : 1.8662 × 10^24
Explanation:
1 mol of CO2 contains 6.02 × 10^24 molecules
So, 3.1 mol of CO2 contains 6.02 × 10^24 × 3.1 mol = 1.8662 × 10^24
