Answer:
bines relative humidity and temperature in a comfort index
Explanation:
The Heat Index temperature measures how hot it feels when humidity is factored with the air temperature.
It is important for the human body's comfort.
The human body feels warmer in humid conditions it begins to perspire or sweat to cool itself off when the body gets too hot.
The concept of the heat index was developed by George Winterling in 1978.
The heat index temperature makes assumptions regarding the human body mass and height, clothing, amount of physical activity etc.
The heat index temperature <u>bines relative humidity and temperature in a comfort index.</u>
Option (C) is the correct answer.
When solute is added to the solvent, results in the formation of solution and the process is said to be dissolution.
Dissolution process depends upon the three factors: temperature, stirring and surface area.
Stirring increases the rate of dissolving as when stirring a solute in the solvent, stirring helps in the distribution of solute throughout the solvent which results in speed up the dissolving rate.
Dissolution also depends upon the temperature, in warm solvent, solute dissolves readily whereas in cool solvent, solute dissolves slowly as particles have more movement energy.
Greater the surface area, there will be more contact between the solute particles and solvent particles which increases the rate of dissolving. Smaller the surface are, there will be less contact between the particles which decreases the rate of dissolving. For example: granulated sugar dissolves more readily due to larger surface area and one ice cube dissolves slowly due to smaller surface area.
Hence, rate of dissolution depends upon temperature, stirring, surface area.
