For the reaction  2C4H10(g)  +  13O2(g)  →  8CO2(g)  10H2O(g) ; ΔH° = -125 KJ/mol and ΔS°=+253 J/mol.K. This reaction is ……… Hint: Use ΔG = ΔH – TΔS ;     ΔG = change in Gibbs free energy;  ΔH = change in enthalpy; T = temperature in Kelvin and  ΔS = change in entropy.   ΔG < 0 for a spontaneous process Identify which of the following set of conditions give an overall negative value for  ΔG (spontaneous)

An alpha particle is a ……………… nucleus

Which of the following element has the lowest electronegativity? 

Which condition is essential to prepare a saturated solution of an ionic salt?

The Ka for the first dissociation of a polyprotic acid is always _________ compared to the Kafor the second dissociation

A titration was carried out to find the concentration of an unknown base (NaOH) with a known concentration of HCl. Concentration of HCl =  0.35 M Volume of HCl dispensed from the buret = 24.35 mL Volume of NaOH added into the beaker = 36.44 mL Calculate HCl moles dispensed during the titration

Which of the following particle is capable of penetrating through a sheet of aluminum?

An individual licensed by a state to prepare a dead human for final disposition is called

Which one of the following combinations cannot produce a buffer solution?

What is the name of the acid:  CH3COOH?