If a pure substance undergoes an infinitesimal reversible process between two equilibrium states c) the change in internal energy is given by du tds pdv show that if t is held constant, the first energy equation is given by au др t ат -p av (10 marks) (av show cy bt d) s

Avalue that describes how heavy an object is and is related to the force of gravity is

Explain the difference between each pair of concepts. a. frequency and relative frequency b. percentage and relative frequency a. select the correct choice below. a. frequency is the total number of observations in a data set. relative frequency is the number of times a particular distinct value occurs. b. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of a value to the total number of observations. c. frequency is the total number of observations in a data set. relative frequency is the ratio of the number of times a particular distinct value occurs to the frequency. d. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of two different values.

Explain what happens at the saturation point when adding salt to water at room temperature.