Everything ELECTRON
Write the shorthand electron configuration for Ga3+ and state whether it is paramagnetic or diamagnetic
[Ar] 3d10
diamagnetic
Which of the following is/are true?
A. Covalent bonding involves sharing of electrons
B. Chemical bonds form to increase the potential energy of the charged particles that compose atoms
C. More than one compound cannot have the same empirical formula
D. The empirical formula of C6H14 is C3H7
A. Covalent bonding involves sharing of electrons
B. Chemical bonds form to increase the potential energy of the charged particles that compose atoms
C. More than one compound cannot have the same empirical formula
D. The empirical formula of C6H14 is C3H7
Which of the following is/are true?
A. According to the octet rule, most nonmetals want to have 8 valence electrons in their outermost shell to be stable
B. A double bond means one atom is bonded to two different atoms
C. For the octet rule, a lone pair of electrons is only counted towards the electrons for one atom
D. Two adjacent atoms share three pairs of electrons in a triple bond
A. According to the octet rule, most nonmetals want to have 8 valence electrons in their outermost shell to be stable
B. A double bond means one atom is bonded to two different atoms
C. For the octet rule, a lone pair of electrons is only counted towards the electrons for one atom
D. Two adjacent atoms share three pairs of electrons in a triple bond
Calculate the mass of C38H56O4Br5 (5 sig figs)
976.33 g/mol
Everyone in your group come up with one study tactic you used to prepare for exam 2. Each person needs to have a different answer.
Good job studying for this exam! Hard work pays off :)
Which of the following is/are true?
A. The electron affinity of F is more exothermic than the electron affinity of Ne
B. The electron affinity of K is more exothermic than the electron affinity of Li
C. The electron affinity of C is more exothermic than the electron affinity of F
D. The electron affinity of Cl is more exothermic than the electron affinity of Si
A. The electron affinity of F is more exothermic than the electron affinity of Ne
B. The electron affinity of K is more exothermic than the electron affinity of Li
C. The electron affinity of C is more exothermic than the electron affinity of F
D. The electron affinity of Cl is more exothermic than the electron affinity of Si
Which of the following is/are true?
A. The charge of the cation in PbS2 is 4+
B. The charge of the anion in Ni2O3 is 3-
C. The formula unit for the ionic compound formed between Al and O is Al2O3
D. The formula unit for the ionic compound formed between Na and O is NaO2
A. The charge of the cation in PbS2 is 4+
B. The charge of the anion in Ni2O3 is 3-
C. The formula unit for the ionic compound formed between Al and O is Al2O3
D. The formula unit for the ionic compound formed between Na and O is NaO2
Which of the following is/are true?
A. In a nonpolar bond, electrons are shared equally; in a polar bond, electrons are shared unequally
B. C is more electronegative than Si
C. As electronegativity increases, an atom pulls less on the electrons in a bond
D. An N-O bond would be more polar than a C-O bond
A. In a nonpolar bond, electrons are shared equally; in a polar bond, electrons are shared unequally
B. C is more electronegative than Si
C. As electronegativity increases, an atom pulls less on the electrons in a bond
D. An N-O bond would be more polar than a C-O bond
Calculate the mass in ng of 5.62x1013 molecules of C18H30O4. Give your answer to 3 significant figures.
29.0 ng
Your group will actually do the easiest problem remaining in "Who's LEWIS?"
200 points if you got it right!
Which of the following is/are true?
A. Na has a smaller first ionization energy than Mg
B. K has a smaller first ionization energy than Na
C. Mg has a smaller second ionization energy than Na
D. Na has a smaller third ionization energy than Mg
A. Na has a smaller first ionization energy than Mg
B. K has a smaller first ionization energy than Na
C. Mg has a smaller second ionization energy than Na
D. Na has a smaller third ionization energy than Mg
Which of the following is/are true?
A. Ca(NO3)2 is calcium nitrate
B. ZnBr2 is zinc bromide
C. Mn(IO4)2 is manganese (II) iodate
D. Fe2O3 x 3H2O is iron (II) oxide trihydrate
A. Ca(NO3)2 is calcium nitrate
B. ZnBr2 is zinc bromide
C. Mn(IO4)2 is manganese (II) iodate
D. Fe2O3 x 3H2O is iron (II) oxide trihydrate
Draw the following Lewis structures:
A. CH3CHO
B. C2H6
C. N2
D. CN-
Correctly draw all 4 Lewis structures on the board to get points for this question :)
Calculate the mass in mg of C48H72O6 that contains 6.25 x 1021 total atoms. Give your answer to 3 significant figures.
61.4 mg
(NO LOOKING IN YOUR NOTES OR BLACKBOARD FOR THIS ONE)
What were the first and last learning objectives covered on Exam 2?
Learning objectives 24 to 46 were covered on Exam 2
Write the shorthand electron configuration for Bi5+ and state whether it is paramagnetic or diamagnetic
[Xe]5d104f14
diamagnetic
Name the following compounds:
A. NBr3
B. S2O2
C. N2O
D. Fe2O3
A. Nitrogen tribromide
B. Disulfur dioxide
C. Dinitrogen monoxide
D. Iron (III) oxide
Fill in the blanks (numbers):
A. There is/are _____ equally good resonance structure(s) for acetate (CH3COO-); in each resonance structure, there is/are _____ double bond(s) between C and O
B. In the best resonance structure for NNO, there is a _____ formal charge on the oxygen atom
C. There is/are _____ equally good resonance structure(s) for NO3-; in each resonance structure, there is/are _____ double bond(s) total
A. There are 2 equally good resonance structures for acetate (CH3COO-); in each resonance structure, there is 1 double bond between C and O
B. In the best resonance structure for NNO, there is a -1 formal charge on the oxygen atom
C. There are 3 equally good resonance structures for NO3-; in each resonance structure, there is 1 double bond total
A certain organic compound is 18.6% oxygen by mass. If its density is 0.725 g/cm3, what volume in cm3 of the organic compound contains 5.42 x 1022 oxygen atoms? Give your answer to 3 significant figures.
10.7 cm3
Your group will actually do the hardest problem remaining in "MASS Hysteria"
400 points if you got it right!
An element has the following successive ionization energies in kJ/mol:
1st IE: 620
2nd IE: 945
3rd IE: 7,215
4th IE: 8,905
5th IE: 10,150
6th IE: 11,075
7th IE: 12,350
8th IE: 14,650
Determine the number of valence electrons for this element.
2 valence electrons
Name the following compounds:
A. ZnCl2
B. Mn(IO2)3
C. Ba3(PO4)2
D. Fe(C2H3O2)2 x 4H2O
A. Zinc chloride
B. Manganese (III) iodate
C. Barium phosphate
D. Iron (II) acetate tetrahydrate
Which of the following is/are true?
A. The molecular geometry around the bolded & underlined carbon in CH3COOCH3 is trigonal planar
B. IF5 is polar
C. XeF2 is polar
D. The bond between the two carbon atoms in C2H6 is weaker than the bond between the two carbon atoms in C2H4
A. The molecular geometry around the bolded & underlined carbon in CH3COOCH3 is trigonal planar
B. IF5 is polar
C. XeF2 is polar
D. The bond between the two carbon atoms in C2H6 is weaker than the bond between the two carbon atoms in C2H4
A 35.15 g sample of an organic compound containing only carbon, hydrogen, and oxygen undergoes combustion analysis and produces 82.996 g CO2 and 28.748 g H2O. Find the empirical formula for the compound.
C13H22O4
In June 2017, Fox 5 Las Vegas chief meteorologist Ted Pretty was reporting on citizens' opinions on the best fireworks to buy for July 4th. He stops a boy to ask his opinion. Fill in the blanks in their interaction (Blank 1 for 200 points, Blank 2 for 300, both for 500)
Jack: "What's the best firework to buy?"
Boy: "Wouldn't you ___________________?"
Jack: "Where are your parents?"
Boy: walks away
Jack: to the camera "Kid's _____. Back to you guys."
Blank 1: Wouldn't you like to know, weather boy?
Blank 2: Kid's sketchy. Back to you guys.