The third reason helped Rutherford to discover the nucleus.
The answer it the 3 one I hope this helps
The answer is 19.9 grams cadmium.
Assuming there was no heat leaked from the system, the heat q lost by cadmium would be equal to the heat gained by the water:
heat lost by cadmium = heat gained by the water
-qcadmium = qwater
Since q is equal to mcΔT, we can now calculate for the mass m of the cadmium sample:
-qcadmium = qwater
-(mcadmium)(0.850J/g°C)(38.6°C-98.0°C)) = 150.0g(4.18J/g°C)(38.6°C-37.0°C)
mcadmium = 19.9 grams
Condensation is conversion of vapours to liquid
in vapour the molecules of water are far from each other and can move here and there. When a liquid like water condense the molecules come closer to each other.
Thus come closer together and stick to each other.
