For the reaction: I2 (s) + Cl2 (g) → 2 ICl (g) ΔH° = 36 kJ and ΔS° = 158.8 J/K at 25°C. Calculate the temperature at which Keq is 4.0 × 103. 

What can be concluded about the equilibrium constant, K, for a reaction if ∆G˚ is positive?

The heat of vaporization, ΔHvap of ethyl acetate (C4H8O2) is 35.1kJ/mol. Calculate the change in entropy ΔS in kJ/K, when 643.g of ethyl acetate boils at 77.1°C. Enter your numeric answer, without units, to 3 significant figures.

Which of the following act as buffer solutions? Select all that apply

What is the free Cu2+ concentration if 100.0 mL of 0.020 M Cu2+ solution is mixed with 100.0 mL of 4.0 M NH3? Kf for 2+ is 1.1 × 1013.

The titration curve below describes the:  

Atoms can form multiple bonds.

A hydrogen bond is a strong attraction between an atom and hydrogen.

If an experiment shows that the data does not support the initial hypothesis, what should a scientist do?

An atom can be changed into an isotope by adding or removing a __________________.