SOMEONE HELP PLEASE !! For a certain reaction, the change in Enthalpy is negative and the change in Entropy is positive at a temperature of 300K: ΔH < 0, and TΔS > 0.

Question 1: Is ΔG = ΔH – TΔS positive or negative?

Question 2: Is it a spontaneous reaction or not?

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.

Use the measurements in the table to determine which unidentified metal has the highest density. metal volume mass a 10.5 cm3 122 g b 14.2 cm3 132 g c 16.1 cm3 115 g d 12.7 cm3 126 g