Exam 3 1307 v-5B.pdf - CHEM 1307 Fall 2017 Midterm Exam#3...

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Exam 3 1307 v-5B.pdf

1 )   Which pair of species is isoelectronic ?
A ) Ne and Na +
B ) Ca 2 + and Kr
C ) Be 2 + and Mg 2 +
D ) O 2 - and S 2 -
E ) H + and He
Answer:  A )   Ne and Na +
2 )   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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3 )   Select the gas with the largest root - mean - square molecular speed at 25 ° C
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5 )   Which of the following elements has the largest atomic radius ?
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7 )   Which group in the periodic table contains elements with the valence electron configuration of ns 2 np 1 ?
A ) 3A
B ) 8A
C ) 2A
D ) 4A
E ) 1A
Answer:  C )   3A
8 )   Infrared radiation from the sun has a wavelength of 6200 nm . Calculate the energy of one photon of that radiation .
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9 )   A 275-g sample of nickel at 100.0 ° C is placed in 100.0 m L of water at 22.0 ° C . What is the final temperature of the water ? Assume that no heat is lost to or gained from the surroundings . Specific heat capacities : nickel = 0.444 J / (g · K ) , water = 4.18 J / ( g · K ) .
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10 )   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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11 )   The orientation in space of an atomic orbital is associated with
A ) the spin quantum number ( m
s ) .
B ) the magnetic quantum number ( m
l ) .
C ) the angular momentum quantum number (
l ) .
D ) the principal quantum number (
n ) .
E ) None of these choices is correct .
Answer:  D )   the magnetic quantum number ( m
12 )   A system receives 575 J of heat and delivers 425 J of work . Calculate the change in the internal energy , Δ E , of the system .
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13 )   Which ion has the smallest radius ?
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14 )   A system expands from a volume of 1.00 L to 2.00 L against a constant external pressure of 1.00 atm . Determing the work done by the system ( 1 at m · L = 101.3 J ) .
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15 )   Calculate the heat absorbed when 28.6 g of water is heated from 22.0 ° C to 78.3 ° C ( Specific heat capacity for water = 4.18 J / ( g · K ) .
A ) 1.61 × 10 3 kJ
B ) 9.37 k J
C ) 0.385 kJ
D ) 1.61 kJ
E ) 6.74 k J
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Introductory Chemistry: A Foundation
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Chapter 11 / Exercise 98
Introductory Chemistry: A Foundation
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CHEM 1307 Fall 2017 Midterm Exam #3MULTIPLE CHOICE. Select the one choice that best completes the statement or answers the question.1) Which pair of species is isoelectronic?A) Ne and Na+B) Ca2+and KrC) Be2+and Mg2+D) O2-and S2-E) H+and He
2) Select the correct set of quantum numbers (n, l, ml, ms) for the highest energy electron in theground state of potassium, K.
½3)Select the gas with the largest root-mean-square molecular speed at 25°C
4) Which of the following equations describes the process associated with electron affinity?
e-
e-
5) Which of the following elements has the largestatomic radius?A) BB) AlC) OD) ClE) S
1
We have textbook solutions for you!
The document you are viewing contains questions related to this textbook.
Introductory Chemistry: A Foundation
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Chapter 11 / Exercise 98
Introductory Chemistry: A Foundation
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6) Which one of the following is not a correct formation reaction? (All the reaction equations shownare correct.)
)
)
)
6(l7) Which group in the periodic table contains elements with the valence electron configuration ofns2np1?)
8) Infrared radiation from the sun has a wavelength of 6200 nm. Calculate the energy of one photonof that radiation.
J
J
J
J

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