32.Calculate the rate constant for the
radioactive disintegration of an isotope
that has a half-life of 6930 years.

A. 1.00 × 10 –5yr–1

B. 1.00 × 10 –4yr–1

C. 1.00 × 10 –3yr–1

D. 1.00 × 103 yr–1

E. 1.00 × 104 yr–1

Questions 33–37

A. Amide

B. Amine

C. Ketone

D. Thiol

E. Salt

33.

34.

35.

36.

37.

H

CC

H

H

H

H S H

N H

H

H

H

C

HH

H

C

H

CC

H O

H

H

H N

H

CC

H

H

O H

C

H

H

H CH

H

CC

H

H

H O

H CKO−... +

Practice Test

Section

I

Multiple-Choice Questions

GO ON TO THE NEXT PAGE

31.

Species ∆Hf°(kJ/mole) at 25°C and 1 atm ∆S°(J/mole ⋅K)

BaCO 3 (s) −1170. 100.00

BaO(s) −600. 70.00

CO 2 (g) –400. 200.00

At what temperature does ∆G°become zero for the following reaction:

BaCO 3 (s) →BaO(s) + CO 2 (g)

A. 0 K

B. 1.0 × 101 K

C. 1.0 × 102 K

D. 1.0 × 103 K

E. 1.0 × 104 K