For the following reaction: 2H2S + 3O2 = 2H2O + 2SO2, how many grams of O2 (MM = 32.00g / mol) are needed to react with 45.9 of H2S (34.09g / mol)?

Predict whether the changes in enthalpy, entropy, and free energy will be positive or negative for the boiling of water, and explain your predictions. how does temperature affect the spontaneity of this process?

To apply in a gold the individual gold atoms are united to each other by means of a metallic bond. how would you use the gold block to determine the atomic radius of a gold atom?

In the experiment you asked to react hydrochloric acid and with sodium hydroxide. when measuring the volume of the reactants, which instrument would give the greatest precision.