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Precipitation and molarity

100

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

200

Does a precipitate form for this chemical equation: AgNO₃(aq) + KCl(aq) →

Yes : AgCl(s) + KNO₃(aq) 

300

How many grams of hydrogen chloride (HCl) are required to prepare 500 mL of 5M HCl in water?

91.25 g HCl

400

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

Oxidation and reduction

100

Define oxidation and reduction

Oxidation is the loss of electrons and Reduction is the gain of electrons

200

MnO₂ (Find the oxidation number of Mn)

+4

300

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

400

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

Wavelength and frequency

100

Calculate the frequency of blue light having a wavelength of 350 cm

8.57 x 10⁷ Hz

200

What is the energy of a photon with a wavelength of 200 cm?

9.939 x 10^-26 J

300

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

400

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

Quantum numbers

100

How many nodes (hint: remember pictures) are in P, S, F, and D orbital

P = 2, S = 1, F = 8, D = 4

200

Determine the sublevels for 3

s, p, d

300

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)

400

Write a set of quantum number for 3p

n=3, ℓ = 1, mℓ = -1, 0, 1

Electron configuration

100

Write the condensed electron configuration for Cu

[Ar] 4s¹ 3d¹⁰

200

Rank Tl, I, Sn in increasing atomic size

I < Sn < Tl

300

Rank Rb, Br, I in decreasing ionization energy

Br > I > Rb

400

Determine if Cr is paramagnetic or diamagnetic

Paramagenetic