Explanation:
It is given that,
Initial vapor pressure, P₁ = 77.86 mm
Initial temperature, T₁ = 318.3 K
Final vapor pressure, P₂ = 161.3 mm
Initial temperature, T₂ = 340.7 K
We need to find its heat of vaporization. It can be calculated by using Clausius-Clapeyron equation.




So, the heat of vaporization of a substance is 29.31 kJ/mol. Hence, this is the required solution.
Answer:
- Binary
- Open cluster
- Globular cluster
Explanation:
A star system is a group of stars that orbit one another, through he influence of gravitational force. The Earth's star system is called solar system.
True
Most photographs will be made using a shutter speed of 1/60 or faster.