Calorimetry
Orbital Diagrams
Electromagnetic Radiation
Ionization Energy (IE) and Electron Affinity (EA)
Random
100
There are two types of calorimeters talked about in class. Name the two types.
What is a bomb calorimeter and a coffee cup calorimeter
100
Name/Explain one of the three rules about orbital diagrams.
Aufbau principle: e- fill the lowest available energy orbitals first
Hund's rule (aka bus rule): e- fill orbitals singly before pairing up
Pauli exclusion principle: 2 e- in the same orbital must have opposite spins (up arrow and down arrow)
100
What is the speed of light (c)
What is 3.00 x 10^8 m/s
100
Explain/draw/write out the definition of Ionization Energy (IE)
A(g) > A+(g) + e- (IE > 0)
The energy required to remove one electron from a NEUTEAL atom in the GAS phase
100
What is the mass of a photon equation?
E = mc2
200
The equation used to measure heat with specific heat
What is q=ms∆t
200
Write the orbital listing of He
1s2
200
A light is emitted with a wavelength of 500 nm. What is the frequency of this light?
v = c/λ = (3.00 E8 m/s) / (500 E-9 m)
v = 6.00 E14 Hz
200
Explain/draw/write what is Electron Affinity (EA)
X(g) + e- > X- (g) + energy
An atom in GAS phase gains an e- to form a negative ion
200
What are the four letter sublevels of orbitals
S, p, d, f
300
How much heat energy is required to heat 200.g of water from 25. C to 75. C (note specific heat of water = 4.18 J/gC)
q = (200g)(4.18 J/gC?(75 C - 25 C)
q = 41.8 kJ = 42 kJ
300
What element is the following diagram
What is Fluorine
300
What is the energy of a photon of ultraviolet light with a frequency of 1.00 E15 Hz (note E=hv and h=6.626 E-34 Js)
E = (6.626 E-34 Js)(1.00 E15 Hz)
E = 6.63 E-19 J
300
Arrange the following elements of smallest to largest ionisation energy (IE): K, Mg, Al, Cl
K, Mg, Al, Cl
IE increases L>R and decreases T>B
300
What is the first law of thermodynamics?
Energy cannot be created or destroyed (ΔU=Q−W) where q=heat added, w= work done, U = internal energy
400
A 150g sample of iron (s = 0.449 J/gC) cools from 200. C to 50.0 C. How much heat is released?
q = (150g)(0.449 J/gC)(50.0 C - 200.0 C)
q = -10,100 = -10.1 kJ
400
What element is the following diagram:
What is Sodium (Na)
400
A photon has an energy of 4.00 E-19 J. What is its wavelength (note E=hc/λ)
λ = hc/E
λ = (6.626 E-34 Js)(3.00 E8 m/s) /(4.00 E-19 J)
λ = 4.97 E-7 m = 497 nm
400
Arrange the following elements of smallest to largest electron affinity (EA): Li, O, S, F
Li, S, O, F
EA increases L>R and decreases B>T
400
Hess' Law:
Calculate the enthalpy change (ΔH( for the following reaction:
C (s) + O2(g)→CO2(g)
Given:
C (s) + 1/2 O2(g)→CO (g) ΔH=−110 kJ
CO (g) + 1/2 O2(g)→CO2(g) ΔH=−283 kJ
-110 kJ + (-283 kJ) = -393 kJ
500
500g of aluminum (s = 0.900 J/gC) absorbs 9000J of heat. If the initial temperature was 20.0C, what is the final temperature?
9000 J= (500g)(0.900 J/gC)(Tf - 20.0)
Tf = [9000 / (500)(0.900)] + 20.0
Tf = 40.0 C
500
What element is the following list: [Ar] 3d2, 4s2
What is Titanium (Ti)
500
Without looking at notes, what is Planck's constant (h)
What is 6.626 E-34 Js
500
Are IE and EA the opposite of each other?
NO
500
The heat of reactants is -343 kJ. The heat of products is 500 kJ. What is the heat of reaction?
ΔH = H(products) - H(reactants)
ΔH = 500 - (-343) = 843 kJ