Temperature

It is a quantitative measure of the degree to that is an object is “cold” or “hot.”

The Fahrenheit (oF) and Celsius (oC) scales measure associative temperatures. These scales evaluate the temperature being measured along with arbitrary standards like as boiling water and an ice-water bath. The Kelvin scale measures total temperatures. On this scale, a temperature of an object is compared along with the temperature at that the volume and pressure of an ideal gas extrapolate to zero.

Temperature is an intensive property that does not depend on the size of the sample. While we mix two 50-mL samples of water at 20oC, for instance, the mass doubles and the volume doubles, other than the temperature remains the similar.

Heat

Heat is a way of transferring energy among a system and its surroundings that frequent, but not always, modification the temperature of the system. Heat is not conserved; it could be either formed or destroyed. In the metric system, heat is measured in units of calories that are described as the amount of heat needed to raise the temperature of one gram of water from 14.5oC to 15.5oC.

Work

Imagine a system which consists of a sample of ammonia trapped within a piston and cylinder, as display. Suppose that the pressure of the gas pushing up on the piston only balances the weight of the piston, so in which the volume of the gas is constant. Now suppose that the gas decomposes to form nitrogen and hydrogen, raising the number of gas particles within the container. If the temperature and pressure of the gas are held constant, this means in which the volume of the gas must increase.

2 NH3(g) -N2(g) + 3 H2(g)

The volume of the gas can increase through pushing the piston partway out of the cylinder. The amount of work completed is equal to the product of the force exert on the piston times the coldness the piston is moved.

w = F x d

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Eric is an experienced economists and self motivated person sharing his views of Chemistry assignment trends and education pattern, and an experience of teaching.

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