A certain liquid has a vapor pressure of 92.0 Torr at 23.0 ∘ C and 378.0 Torr at 45.0∘C.
A. Calculate the value of Δ H ∘ vap for this liquid. Δ H ∘ vap = kJ / mol.
B. Calculate the normal boiling point of this liquid. Boiling point: ∘ C.

What is the nature of the ca-cl bond in a molecule of calcium chloride (cacl2) if the electronegativity value of calcium is 1.0 and that of chlorine is 3.16?

Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %

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.