measures price change

The graph shows the relationship between number of toys and their price in dollars. Interpret the meaning of the slope as a rate of change. => Cost of each toy is $2. or Cost of each toy is $8. or Cost of each toy is $4. or Cost of each toy is $6...

Change in Mass on Combustion - When a substance burns in air, it undergoes a change in mass. For instance, if 3 g of magnesium is completely burnt, the magnesium oxide will have a mass of 5 g. Magnesium oxide, shows an increase of 2 g, which is the mass of the oxygen that gets c..

Rose wants to change the wallpaper of his drawing room. Which of these measures does she need to use to measure the dimension of the drawing room walls? => mile or yard or inch or foot..

Free Energy and Free Energy Change - Free energy of a system is defined as the maximum amount of energy available to a system during a process that can be converted into useful work. In other words it is a measure of capacity of a system to do useful work. It is denoted by symbo..

Free energy of a system is defined as the maximum amount of energy available to a system during a process that can be converted into useful work. In other words it is a measure of capacity of a system to do useful wor..

Gibbs Free Energy Change and Work - We have learnt that of D G is a measure of the spontaneity of a chemical reaction. It can be shown that the free energy of a process is equal to maximum possible work that can be derived from the process as given below: From first law of therm..

R is the internal energy of the reactants. If the internal energy of the products is less than the internal energy of the reactants, the D E would be negative. On the other hand, when the internal energy of the products is more than the internal energy of the reactants, then D E would be positi..

Every substance has a definite value of enthalpy in a particular state. Like internal energy, the absolute value of enthalpy cannot be measured. However, the change in enthalpy accompanying a process can be determined as the difference between the enthalpies of the products and..

Measurement of Enthalpy of Reactions - The heat changes in chemical reactions are measured with the help of calorimeters. Depending upon the requirements of experiments different types of calorimeters are used. In general, reactions taking place at constant volume and ..

Measurement of Thermal Conductivity of a Solid..