Exam III Review
1.) An X-ray has a wavelength of 2.3 . Calculate the energy (in J) of one photon of this radiation.
2.) A gamma ray emitted by an isotope has an energy of 0.56 MeV (million electron volts; 1 eV =
1.602 x 10-19 J). What is the frequency (in
Exam Review II
1.) What is the pressure (in Pa) of a gas in a closed end flask where h = 9.32 cm?
2.) A 58-L sample of dry air cools from 320oC to 35oC while the pressure goes from 1.23 atm to 98.3
kPa. What is the final volume?
3.) Find the density of Fr
1.) Cation stays the same and is first.
2.) Anion takes the root and add the suffix (-ide)
1.) Roman numerals after metal name depicting charge.
2.) The suffix (-ous) for the ion wi
Exam III Review Answers
1.) 8.6 x 10-16 J
2.) 2.4 x 10-12 m
3.) Using the Rydberg equation to calculate the wavelength (in ) of a photon absorbed when a
hydrogen atom undergoes a transition from n = 2 to n = 3.
4.) 3.69 x 106 J
5.) A.) 2.4 x 10-14 m (b.)
General Chemistry 1450
sections A & B
Chemistry for Engineers
CHEM: 1450: 5 credits. Chemistry 1450 is an intensive, one-semester
course of college chemistry for engineers. Through this course in chemistry
the student will:
12. "The volume of an ideal gas is directly proportional to the number of moles of the gas at constant
temperature and pressure" is a statement of _ Law.
D. Avogadro's S
I Exercise 19.1A
Write a nuclear equation for the decay of(a) radon-212 by a—particle emission.
(b) argon-37 by electron capture‘ and (c) nickel-60 by y—ray emission.
I Exercise 19.1 B
Write a nuclear equation for (a) the acparticle decay ofan isotope to
I Exercise 18.1A
Write a balanced equation for the reaction in which zinc metal is oxidizedto
zinc(ll) ion by a dilute acidic solution containingnitrate ion. Dinitrogen monoxide
gas is also formed.
I Exercise 18.1 B
Write a balanced equation for the oxida
I Exercise 17.1 B
Indicate whether each ofthe following processes is spontaneous or
nonspontaneous. Commenton cases where a clear determination cannot be
(a) The dissolution OH .00 mL of liquid ethanol in 100 mL of liquid water.
(b) The formation of
I Exercise 1 6. 1A
Write a K3p expression for equilibrium in a saturated aqueous solution of(a)
(b) Ligcoa. and(c) Cu3(AsO4)2.
I Exercise 16.1 B
Write a K35, expression for equilibrium in a saturated solution of (a) magnesium
hydroxide (commonly kno
- Exercise 14.1B
Suppose  is ﬁxed at a certain constantvaluewhen equilibrium is reached in
the reversible reaction
Do  and  have uniquevalues? Doesthe ratio [802M803] have a
uniquevalue? Explain. Describe the equilibrium state when  = 1.
I Exercise 15.1A
Identify the Bronsted—Lowry acids and bases and their conjugates in
(3) NH; + Hco3 = NHJ' + (#052
(b) H_~,P0J + H30 : HgPoJ + Hgo‘
I Exercise 15.23
Arrange the following acids in order of increasing strength (that is, from the acid
I Exercise 12.1A
Glucose is a sugar found abundantly in nature—for example. in ripe grapes.
\Nhatis the percent by mass ofglucose in a solution made by dissolving 163 9
glucose in 755 gwater? Do you needto know the formula of glucoseto do that
I Exercise 11.1A
To vaporize a 1.50-9 sample ofliquicl benzene. CaHa. requires 652 J of heat.
Whatis AHvapn of benzene in kilojoules per mole?
I Exercise 11.13
How many kilojoules of heatare requiredto raise the temperature of0.750 L of
I Exercise 13.1A
Con sider the hypothetical reaction
2A+ B —) 2 C + D
Suppose that at some point duringthe reaction [D] = 0.2885 M and that 2.55 min
2 min. 33 s) later [D] = 0.3546 M.
(a) What is the average rate of reaction duringthis time peri
I Exercise 10.1A
Predictthe molecular geometry of (a) silicon tetrachloride and (b) antimony
I Exercise 10.1B
Predictthe molecular geometry of (a) BF; and (b) N3‘. I Exercise 10.23
Usethe VSEPR method to explain why 0ng hasthe T-shaped mole
Give the Lewis symbol for (a) Ar, (b) Br, and (c) K.
Give the Lewis symbol for (a) arsenic, (b) rubidium, and (c) tellurium.
Use Lewis symbols to show the formation of ionic bonds between barium and iodine.
Write electron configurations for chlorine using (a) spdf notation, (b) a noble-gas-core
abbreviated electron conf iguration, and (c) an orbital diagram.
Which of the following are valid orbital diagrams?
I Exercise 1.1A
Restate ea ch of the following 111easurenients by attaching an appropriate preﬁx to the unit
to eliminate th e p ow er often.
(502.05 x 10*5 111 (b)4.o3 x 103g (c) 106 x 10-9 (05.15 x 10 "2111
I Exercise 1.1B
Restate ea ch of the following
In a process in which 89 J of work is done on a system, 567 J of heat is given off. What is delta U of the
In a particular process, the internal energy of a system increases by 41.4 J and the quantity of work the
Calculate the frequency, in hertz, of a microwave that has a wavelength of 1.07 mm.
Calculate the wavelength, in nanometers, of infrared radiation that has a frequency of 9.76 x 10 13 Hz.
Which source produces ele