Identify the missing  particle/element in the following reaction                                                   4219K →0-1e + _____

Calculate the molarity  (M) of a solution that contains 70.00 g of H2SO4 in 280.00 mL of solution Hint: concentration = moles / L

What is the concentration of the ions in 3.0 L of 1.0 MAl2(CO3)3?   Answer       [Al 3+]          [CO 3 2 -]      A 0.33 M 0.50 M B 0.66 M 0.99 M C 2.0 M 3.0 M D 3.0 M 4.5 M

Given the following balanced equation, determine the rate of reaction with respect to [SO2]. 2SO2(g) + O2(g) à 2SO3(g)

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