Take a Diagnostic Exam ‹ 27
- 2 IO 3 - (aq) + 6 H 2 O(l) + 10 e- → I 2 (s) + 12 OH-(aq)
Using the above reaction, if a current of 7.50 A
is passed through the electrolytic cell for 0.45 h,
how should you calculate the grams of I 2 that
will form?
(A) (7.50) (0.45) (3,600) (253.8)/(10)
(B) (7.50) (0.45) (3,600) (126.9)/(96,500) (10)
(C) (7.50) (0.45) (60) (253.8)/(96,500) (10)
(D) (7.50) (0.45) (3,600) (253.8)/(96,500) (10)
Chapter 17
- When^22688 Ra decays, it emits two a particles, then
a b particle, followed by an a particle. The result-
ing nucleus is:
(A)^21283 Bi
(B)^22286 Rn
(C)^21482 Pb
(D)^21483 Bi - Which of the following lists the types of radia-
tion in the correct order of increasing penetrating
power?
(A) a, g, b
(B) b, a, g
(C) a, b, g
(D) b, g, a - What is the missing product in the following
nuclear reaction?
(^23692) U → 410 n + 13653 I + ___
(A)^9039 Y
(B)^9638 Sr
(C)^9639 Y
(D)^9840 Zr
- If 75% of a sample of pure^31 H decays in 24.6 yr,
what is the half-life of^31 H?
(A) 24.6 yr
(B) 18.4 yr
(C) 12.3 yr
(D) 6.15 yr
Chapter 18
- Alkenes are hydrocarbons with the general for-
mula CnH 2 n. If a 1.40 g sample of any alkene is
combusted in excess oxygen, how many moles of
water will form?
(A) 0.2
(B) 0.1
(C) 1.5
(D) 0.7 - What type of compound is shown?
C
O
HCH 2 –CH 3(A) an alcohol
(B) an aldehyde
(C) a ketone
(D) an esterChapter 19
Questions on this chapter are incorporated into
the chapters concerning the specific experiments.