1. DESCRIBE THE MECHANICAL ENERGY OF A ROLLER COASTER CAR IMMEDIATELY BEFORE IT BEGINS TRAVELING DOWN A LONG TRACK. 2. GIVE ME 4 DIFFERENT FORMS OF ENERGY

3. HOW IS ENERGY STORED IN FOOD?

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

fe 55.85 g/mol and h2o 18.02 g/mol.

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.

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.