Chemistry Basics/Electrons
Perform the following conversions:
70 mL to DL
845 kg to g
0.007 DL
845,000 g
What property is based on the ability of an atom to attract electrons to itself within a compound?
Electronegativity
Give the formulas for Silver sulfite and Triphosphorus nonafluoride
Give the names of Be(C2H3O2)2 and PbO2
Ag2SO3 and P3F9
Beryllium acetate and Lead (IV) oxide
Determine the type of reaction below, predict the products, and balance the final equation:
C6H14 + O2 -->
Combustion
2C6H14 + 19O2 --> 12CO2 + 14H2O
What neutral element has 2 valence electrons in the 4s shell and 2 half filled p orbitals (in addition to its core electrons)?
Ge (Germanium)
Give the full electron configuration for Nickel and give the noble gas configuration for Vanadium.
1s22s22p63s23p64s23d104p65s24d8
[Ar] 4s23d3
Arrange the following in order of increasing ionization energy: O, F, Si, P
Si, P, O, F
Draw the lewis structure for calcium bromide and the lewis structure for carbon dioxide.
[Ca]2+ [Br]-2
O=C=O
Determine the type of reaction below, predict the products, and balance the final equation
Mg (s) + AlPO4 (aq) →
Single Replacement
3Mg (s) + 2AlPO4 (aq) → 2Al (s) + Mg3(PO4)2 (aq)
How many valence electrons in an atom with the following electron configuration? 1s22s22p63s2
What would be the highest energy subshell in the Nb3+ ion?
2 / 5s
Aufbau = Lowest energy orbitals fill first
Pauli = No two electrons can have the same four quantum numbers (must have opposite spins)
Hund's = Must put one electron in each orbital before doubling up
Arrange the following elements in order from highest electronegativity to lowest electronegativity: Sb, S, F, Se
F, S, Se, Sb
Determine if the following molecule is polar or nonpolar and list all of the IMFs present in the compound - H2S
Polar - LDFs and Dipole-Dipole Forces
Determine the type of reaction below, predict the products, and balance the final equation
FeBr3 + H2SO4 -->
Double Replacement
2FeBr3 + 3H2SO4 --> Fe2(SO4)3 + 6HBr
What is the molar mass of Al2(SO3)3?
294.17 g
Which of the following is a chemical change? (More than one is correct)
Boiling point, flammability, evaporation, red color, neutralize an acid
Flammability and neutralize an acid
Arrange the following set of ions in order of increasing atomic radii: S2-, Cl-, P3-
Cl-, S2-, P3-
Draw the Lewis structure for XeF4 and give the electronic geometry, molecular geometry, bond angles, and hybridization.
Octahedral, square planar, 90˚, sp3d2
An aqueous solution of potassium iodide and silver nitrate are mixed. Give the overall, total ionic, and net ionic equations.
KI (aq) + AgNO3 (aq) --> KNO3 (aq) + AgI (s)
Draw the Lewis structure for BrF5 and give the electronic geometry, molecular geometry, bond angles, and hybridization.
Octahedral, Square pyramidal, 90, sp3d
Lithium-6 is 4% abundant and lithium-7 is 96% abundant. What is the average mass of lithium?
6.96 g
What is the trend for atomic size on the periodic table and WHY is this the trend?
Increases to the left and down a group. Increase down a group due to adding another orbital and decreases to the left due to adding another proton, causing a higher effective nuclear charge.
Which of the following molecules will have the highest boiling point and why? CH3OH or CH3OCH3
Draw the Lewis Structure for the compound that will have the highest boiling point
CH3OH because of hydrogen bonding
Aqueous solutions of sodium carbonate and manganese(V) chloride are mixed. Give the overall, total ionic, and net ionic equation.
5Na2CO3 (aq) + 2MnCl5 (aq) --> Mn2(CO3)5 (s) + 10NaCl (aq)
How many grams are in 2.5 x 1019 molecules of trinitrogen dioxide? (Use proper sig figs)
3.1 x 10-3 grams