Exam 1
Exam 2
Exam 3
Hybridization, VSEPR, Polarity
Miscellaneous
100
What is the weight of Iron (II) Nitride and its formula?
Fe3N2 195.55 g/mol
100
Which one is a strong electrolyte when dissolved in water?
KNO3, N2, CO2,
KNO3
100
Which wave has lower energy given their wavelengths?
Wave 1 : 30 nm
Wave 2: 15 mm
Wave 2, longer wavelength means less energy.
100
Which bonds are polar?
H2O, CH4, SOCl2, H2, CO2
H2O, and SOCl2
100
what did the Millikan oil-drop test prove?`
The electron has a negative charge
200
How many molecules of carbon dioxide are in 12.5 g of carbon dioxide?
1.71 x 1023 molecules
200
What is the equation for molarity?
M = mol / liter
M = n / v
200
A photon has 1.67 X 10-19 J of energy, whats the wave length of the photon?
1.19 X 10-6 m
200
What geometry does NO2- have?
Trigonal planar
200
what did Ernest Rutherford prove with his gold foil experiment?
the atom is mostly empty space
300
The correct formula between aluminum ions and sulfate ions is?
Al2(SO4)3
300
This process is endothermic
Ice cream melting
True or False?
True
300
determine the enthalpy change (in kJ) for the reaction of 64.0 g of oxygen gas (MW = 32.0) with excess methane gas (MW = 16.0). CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(l) ΔH = -890 kJ
-890 kJ
300
Which of these geometries is polar?
Tetrahedral Trigonal Pyramidal
Bent Linear
Trigonal Pyramidal and Bent
300
Order in terms of strongest to weakest lattice energy: CaF2, MgO, BeO, NaCl
BeO, MgO, CaF2, NaCl
400
What is the percent composition of Cl in CCl4?
92% Cl
400
Given there is a 4.57 g sample of HCl in a 50 mL solution what is the molarity of the HCl?
2.5M HCl
400
if 10 kg of CaCO3(s) is heated from 10C to 35C, what is the quantity of heat absorbed in kJ
205 kJ
400
What is the structure of Sulfate?
400
How many bonds can an sp3 hybridized carbon form with other atoms?
4 bonds
500
FeCb(s) + H2S(g) ----> Fe2S3(s) + HCI(g)
What is the coefficient on HCl when the equation is balanced using the smallest whole number?
6
500
What is the [H+ ] in a 0.025 M Ba(OH)2 solution?
2.0 x 10-13M [H+]
500
What is the electron configuration for a neutral atom of Ba?
[Xe] 6s2
500
How many Pi bonds are in 2 sets of triple bonds?
4 pi bonds, 2 for each triple bond
500
If the pH of a solution is 2.5, what is the [OH-] concentration?
3.16 x 10-12 M [OH-]
600
Determine number of grams of oxygen required to completely combust 12.0 g of glucose (C6H12O6).
12.8 g O2
600
What is the chloride ion concentration in a .150 M BaCl2(aq) solution?
.300M
600
What is the electron configuration of Mn3+?
[Ar] 3d4
600
What is the hybridization of PBr3?
sp3, 4 electron domains
600
Balance the reaction
C8H18 + O2 --> CO2 + H2O
2:25:16:18
700
H2(g) + F2(g) → 2 HF(g)
If 5.00 g of hydrogen gas are combined with 38.0 g of fluorine gas, the maximum mass of hydrogen fluoride that could be produced is?
40 g HF
700
If 30.0 mL of 0.150 M CaCl2 is added to a solution containing excess AgNO3, what is the maximum mass in grams of the AgCl precipitate formed?
CaCl2(aq) + 2 AgNO3(aq) → Ca(NO3)2(aq) + 2AgCl(s)
1.29 g AgCl
700
What are the quantum numbers and electron configuration for Sr2+
[Kr]
n = 4
l = 1
ml = 1
ms = -1/2 or +1/2
700
in the molecule butane how many sigma and pi bonds are there? 
13 sigma bonds, 0 pi bonds
700
What is the difference between electron domain geometry and molecular geometry?
molecular geometry ignores lone pairs.