Tre or false somthing must have mass in order to creat change?
1. something must have mass in order to create change.
a. true
b. false
2. powdered medicine fills a pill capsule. which of the following is the best description of the state of the powder?
a. it is a solid because all powders are solid.
b. it is a gas because it takes up the entire volume of the pill capsule.
c. it is a liquid because it does not hold a definite shape.
3. find an example of something that you do not know the state of. describe it, and tell me your best guess of what state it is. explain your guess.

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.