una disolución de amoníaco tiene una densidad de 0,979 g/ml y una concentración de 2,58 mol/l ¿cuál será su concentración expresada en %?

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.

Suppose you mix one mole of sulfuric acid (h2so4) with 1 mole of sodium hydroxide(naoh). why does the ph of the solution remain below 7? ( explain so i can get better understanding! )

The vapor pressure of ethanol is 1.00 × 102 mmhg at 34.90°c. what is its vapor pressure at 61.61°c? (δhvap for ethanol is 39.3 kj/mol.)