Answer:
c.The value of T at Recording Station N would be greater than T at Recording Station S.
Explanation:
We can deduce from the information provided that the value of T at recording station N would be greater than T at recording station S.
This problem relates distance with time.
Speed = 
Distance = Speed x time
- Just like any other physical quantity, speed of a substance is directly related to time.
- The larger the time taken the farther the distance it will cover assuming the velocity is constant.
- Earthquake waves for example moves at constant speed with a unique velocity in earth materials.
- The farther the distance, the more time it will take to reach the seismic recording station.
- Since N is a distance of 200km from the epicenter, it will take a greater time and have a higher reading of T to reach the station.
Answer:
900 J/mol
Explanation:
Data provided:
Enthalpy of the pure liquid at 75° C = 100 J/mol
Enthalpy of the pure vapor at 75° C = 1000 J/mol
Now,
the heat of vaporization is the the change in enthalpy from the liquid state to the vapor stage.
Thus, mathematically,
The heat of vaporization at 75° C
= Enthalpy of the pure vapor at 75° C - Enthalpy of the pure liquid at 75° C
on substituting the values, we get
The heat of vaporization at 75° C = 1000 J/mol - 100 J/mol
or
The heat of vaporization at 75° C = 900 J/mol
Sodium, Atomic mass: 22.989769 g
You can see in a periodic table
ACIDIC BEHAVIOR OF SOLUTION