Precipitation and molarity
Difference between total ionic and net ionic equation
A net ionic equation shows only the elements and compounds that are involved in a reaction, while a complete ionic equation also includes the spectator ions
Define oxidation and reduction
Oxidation is the loss of electrons and Reduction is the gain of electrons
Calculate the frequency of blue light having a wavelength of 350 cm
8.57 x 107 Hz
How many nodes (hint: remember pictures) are in P, S, F, and D orbital
P = 2, S = 1, F = 8, D = 4
Write the condensed electron configuration for Cu
[Ar] 4s1 3d10
Does a precipitate form for this chemical equation: AgNO3(aq) + KCl(aq) →
Yes : AgCl(s) + KNO3(aq)
MnO2 (Find the oxidation number of Mn)
+4
What is the energy of a photon with a wavelength of 200 cm?
9.939 x 10-26 J
Determine the sublevels for 3
s, p, d
Rank Tl, I, Sn in increasing atomic size
I < Sn < Tl
How many grams of hydrogen chloride (HCl) are required to prepare 500 mL of 5M HCl in water?
91.25 g HCl
Determine what is being oxidized and what is being reduced:
2HCl (aq) + Zn (s) → H2 (g) + ZnCl2 (aq)
Zn is oxidized and H in HCl is reduced
Determine the wavelength of light emitted when an electron of an helium atom makes a transition from orbital 3 to orbital 6
1.094 x 10-6 J
Given the information find the n, ℓ, mℓ,sublevel numbers, and number of orbitals: 4d
n=4, ℓ = 2, mℓ = -2, -1, 0, 1, 2, number of orbitals = 5 (2ℓ + 1)
Rank Rb, Br, I in decreasing ionization energy
Br > I > Rb
Using the chemical equation how many grams of HCl is required to neutralize 20.0 mL of 0.5 M NaOH? HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)
0.365 g HCl
Balance the chemical equation and determine what is being oxidized and what is being reduced: AlCl3 (aq) + Mg (s) → Al (s) + MgCl2 (aq)
Balanced chemical equation: 2AlCl3 (aq) + 3Mg (s) → 2Al (s) + 3MgCl2 (aq)
Oxidized is Mg
Reduced is Al in AlCl3
When an electron absorbs -4.0 x 10-35 J of energy and ascends from energy level 2, what energy level does the electron end at?
Level 2
Write a set of quantum number for 3p
n=3, ℓ = 1, mℓ = -1, 0, 1
Determine if Cr is paramagnetic or diamagnetic
Paramagenetic