The image shows a periodic table with the principle groups, and shows the electronegativity of each atom. This is useful when determining the polarity of a substance. Which of the following bonds is classified as a polar covalent bond?

SELECT all that apply:

a. S-O
b. K-Cl
c. Br-Br
d. C-F

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.

air

in a tire you fill a tire with air

then a couple days later you check the air pressure in the tire

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