The commensal Neisseria spp. are often confused with pathogenic gram-negative diplococci. A simple test utilizing a blood agar plate and an antibiotic disk resulting in elongation of the cells assists in the differentiation of these organisms. Which antibiotic disk is utilized in this application?

Virulence determinants of H. pylori include:

Performance of the “factor requirement test” for Haemophilus involves the:

@X@user.full_name@X@ @GMU: The free energy of formation for C2H4(g) is 68.156 kJ/mol. What is the equilibrium constant at 25.0oC for its formation?

@X@user.full_name@X@ @GMU: The initial concentration of PCl5 was 0.1172 M. It was allowed to decompose at some temperature until equilibrium had been attained (see reaction below). What must be the equilibrium concentration of PCl3?PCl5(g) → PCl3(g) + Cl2(g) Kc = 0.0580

@X@user.full_name@X@ @GMU: The initial concentration of COCl2 was 0.1136 M. It was allowed to decompose at some temperature until equilibrium had been attained (see reaction below). What must be the equilibrium concentration of CO?COCl2(g) → CO(g) + Cl2(g) Kc = 8.13e-4

@X@user.full_name@X@ @GMU: ACS-What is the free energy change for the reaction below? CrsO72-(aq) + 14H+(aq) + 6Br-(aq) → 2Cr3+(aq) + 3Br2(aq) + 7H2O(l) E° = 0.140V

@X@user.full_name@X@ @GMU: For the equilibrium reaction below. To what is Kc equal?2CH4(g) + 3O2(g) → 2CO(g) + 4H2O(g)

@X@user.full_name@X@ @GMU: ACS-Determine the cell potential for the reaction below if [Cd2+] = 0.1554M and [Fe3+] = 0.0131M 3Cd2+(aq) + 2Fe(s) → 3Cd(s) + 2Fe3+(aq) E°= -0.360V

@X@user.full_name@X@ @GMU: ACS-Radioactive substances decay by first-order kinetics. How many years would be required for a sample containing technicium-99 to decrease to 64.63% of its initial activity? The half-life of technicium-99 is 2.20e5 years.