The fm station kdul broadcasts music at 991 mhz find

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Exam 3 1307 v-5A.pdf

6 )   In the hydrogen atom spectrum , what is the wavelength of light associated with the n = 4 to n = 1 electron transition ? The energy of the hydrogen atom is : △ E = E final - E initial = - 2.18 x 10 - 18 J ( 1 n 2 final - 1 n 2 initial )
A ) 2.04 x 10 - 18 m
B ) 9.73 x 10 - 8 m
C ) 1.46 x 10 3 m
D ) 1.03 x 10 7 m
E ) 5.96 x 10 - 25 m
7 )   Place the following pure gases in order of increasing diffusion rate ( smallest to largest ) when released into the laboratory atmosphere at 25 C° and 1 atm pressure : H 2 , Ar and CH 4 .
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8 )   The FM station KDUL broadcasts music at 99.1 MHz . Find the wavelength of these waves .
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9 )   Which pair of words or phrases makes the following statement true ? " Compared to the size of the corresponding neutral atom , the size of an atomic cation is always ________ and the size of an atomic anion is always ________.
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10 )   Which of the following elements has the largest atomic radius ?
A ) Al
B ) B
C ) O
D ) Cl
E ) S
Answer:  A )   Al
11 )   Which ion has the smallest radius ?
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3 -   12 ) Select the correct set of quantum numbers ( n , l , m l , m s ) for the highest energy electron in the ground state of potassium , K .
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12 )   Select the correct set of quantum numbers ( n , l , m l , m s ) for the highest energy electron in the ground state of potassium , K .
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14 )   Which of the following elements has the lowest first ionization energy ?
A ) Li
B ) I
C ) F
D ) Fe
E ) Rb
Answer:  E )   Rb
15 )   In the electron configuration [ Ar ] 4 s 2 3 d 10 4 p 4 , which are valence electrons ?
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16 )   Calcium hydroxide , which reacts with carbon dioxide to form calcium carbonate , was used by the ancient Romans as mortar in stone structures . The reaction for this process is Ca ( OH ) 2 ( s ) + CO 2 ( g ) → CaCO 3 ( s ) + H 2 O( g ) Δ H = – 69.1 kJ What is the enthalpy change if 3.8 mol of calcium carbonate is formed ?
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Chapter 9 / Exercise 9.9
Chemistry: Principles and Practice
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8) The FM station KDUL broadcasts music at 99.1 MHz. Find the wavelength of these waves.A) 5.33 ×102B) 1.88 ×10–2 C) > 103mD) 3.03 mE) 0.330 m
m
m
9) Which pair of words or phrases makes the following statement true?"Compared to the size of the corresponding neutral atom, the size of an atomic cation is always________ and the size of an atomic anion is always ________.
10) Which of the following elements has the largestatomic radius?
2
We have textbook solutions for you!
The document you are viewing contains questions related to this textbook.
Chemistry: Principles and Practice
The document you are viewing contains questions related to this textbook.
Chapter 9 / Exercise 9.9
Chemistry: Principles and Practice
Reger Chem
Expert Verified
11) Which ion has the smallestradius?
3-12) Select the correct set of quantum numbers (n, l, ml, ms) for the highest energy electron in theground state of potassium, K.A) 4, 0, 1, ½B) -4, 1, 0, ½C) 4, 1, 1, ½D) 4, 1, -1, ½E) 4, 0, 0,
½13) Which one of the following is not a correct formation reaction? (All the reaction equations shownare correct.)
)
)
)
)14) Which of the following elements has the lowestfirst ionization energy?
15) In the electron configuration [Ar] 4s2 3d10 4p4, which are valence electrons?
16) Calcium hydroxide, which reacts with carbon dioxide to form calcium carbonate, was used by theancient Romans as mortar in stone structures. The reaction for this process is Ca(OH)2(s) + CO2(g) CaCO3(s) + H2O(g) ΔH= –69.1 kJWhat is the enthalpy change if 3.8 mol of calcium carbonate is formed?A) –2.6 x 102kJB) –69 kJC) –73 kJD) –18 kJE) None of these choices is correct.

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