One mole of argon gas is held in a rigid container whose volume is 22.41 L at 273.15 K. 3.000 kJ of heat is added. CV =12.47 J mol−1 K−1 a) What is the initial pressure of the gas? b) What is qsys? c) What is wsys? d) What is the final temperature of the gas? e) What is the final pressure of the gas? f) What is ∆E?

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.