Consider the following energy profile diagram and use it to answer the question that follows.
--missing photo--

The activation energy of the reaction is

A. E\(_{A}\)

B. E\(_{B}\)

C. E\(_{C}\)

D. E\(_{D}\)

The enthalpy change of the reaction is------------

A. E\(_{A}\)

B. E\(_{B}\)

C. E\(_{C}\)

D. E\(_{D}\)

The energy profile diagram illustrates-------------

A. an endothermic reaction

B. an exothermic reaction

C. a spontaneous reaction

D. a redox reaction

How many molecules of oxygen would occupy a volume of 2.24 cm\(^{3}\) at s.t.p?[Molar volume at s.t.p = 22,400 cm\(^{3}\), Avogadro's number = 6.02 x 10\(^{23}\)]

A. 3.01 x 10\(^{20}\)

B. 3.01 x 10\(^{27}\)

C. 6.02 x 10\(^{19}\)

D. 6.02 x 10\(^{27}\)

The isotopes of neon are represented by the symbols \(^{20}\)\(_{x}\) Ne, \(^{21}\) \(_{y}\) Ne, and \(^{22}\) \(_{z}\) Ne. The relationship between x, y, and z is?

A. x > y > z

B. x < y < z

C. x = y= z

D. x < z < y

Which of the following pairs of molecules form hydrogen bonds?

A. C\(_{2}\)H\(_{5}\)OH and CH\(_{3}\)OH

B. CH\(_{3}\)OH and H\(_{2}\)

C. H\(_{2}\)S and CH\(_{4}\)

D. NH\(_{3}\) and SO\(_{2}\)

Which of the following statements about elements in Group VII is correct?

A. Br\(_{2}\) will oxidize CI\(^{-}\)

B. F\(_{2}\) has the least tendency to be reduced

C. Cl\(_{2}\) will oxidize I\(^{-}\)

D. l\(_{2}\) is a stronger oxidizing agent than F\(_{2}\)

Electrovalent compounds normally ------------

A. have low boiling points

B. have mobile electrons

C. conduct electricity in the solid state

D. dissolve in polar solvent

A coordinate covalent bond could be formed between

A. NH\(_{3}\) and PC/\(_{3}\)

B. BC/\(_{3}\) and A/C/\(_{3}\)

C. BC/\(_{3}\) and NH\(_{3}\)

D. H\(^{+}\) and A/C/\(_{3}\)

Which of the following scientists discovered the electrons?

A. Thompson

B. James Chadwick

C. Amedeo Avogadro

D. Ernest Rutherford