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
What is the formal charge on O in H2O?
0
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
What is the wavelength of a 3.0MHz frequency wave?
100m
300
Which of these geometries doesnt exist?
trigonal tripyramidal Trigonal Pyramidal
trigonal planar trigonal plainer
trigonal tripyramidal, trigonal plainer
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
specific heat = .84
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 Zr
[Kr] 5s24d2
500
How many Pi bonds are in 2 sets of triple bonds and one single bond?
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
Which of these are strong electrolytes?
CH3CH2OH CaCl2 H2SO4 HF O2
a) 1, 2
b) 2, 3
c) 1, 2, 3
d) 2, 3, 4
2, 3
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
S + O2 ---> SO3
If 1.60g of Sulfur react with 10.1 grams of O2 to make SO3. What is maximum mass of SO3 that can be made?
4.0g SO3
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
Which of these molecules are polar?
BF3
PCl3
SiCl4
XeF4
PCl3
700
Which of these nonmetals would have the least number of free electrons in their charged state?
Ne, O, Cl, N
Ne, most valence electrons