What is the maximum value of the magnetic quantum number, m1, for a 5d electron?
Given the thermochemical equation
2Al(s)+3/2 O2(g) -> Al2O3(s) ?H = -1676 kJ
Find ?H for the following reaction
2Al2O3(s) -> 4Al(s)+3O2(g)
What is wrong, if anything, with the following orbital diagram of an atom in its state?
Calculate ?U of a gas for a process in which the gas absorbs 3 J of heat and does 10 J of work by expanding.
What is the energy of a photon of electromagnetic radiation with a frequency of 5.98 x 1014 Hz?
The ground-state valence-shell configuration of a particular atom is 4f145d16s2. The element to which this atom belongs is a (noble gas; s-block main-group element; transition element; inner transition element; p-block main-group element).
What is the standard enthalpy of formation of liquid methylamine (CH3NH2)
C(s)+O2(g) -> CO2(g); ?H=-393.5 kJ
2H2O(l) -> 2H2(g)+O2(g); ?H=571.6 kJ
½ N2(g)+O2(g) -> NO2(g); ?H=33.10 kJ
4CH3NH2(l)+13O2(g) -> 4CO2(g)+4NO2(g)+10H2O(l); ?H=-4110.4 kJ
A mian-group atom in Period 5 has the following orbital diagram for its valence shell (ground state): What is the symbol for the element?
Which of the following subshells does not exist? Why? 2d; 3p; 4d; 3f; 6g
What is the frequency of a photon having a wavelength of 602.5 nm?
Which of the following orbital occupancy designations is incorrect? Explain why. 2s1; 3d10; 4p7; 4f7; 2p6
An insect in flight at the top of a cliff possesses what type(s) of energy? (kinetic energy, potential energy, and/or internal energy) Explain your answer.
What is the standard enthalpy of formation of SrCO3(s)?
SrO(s)+CO2(g) -> SrCO(s); ?H=-234.6 kJ
Substance ?H (kJ/mol)
How many orbitals have the set of quantum numbers n = 4 and l = 1?
A metalloid has an acidic oxide of the formula R2O3. The element has no oxide of the formula R2O5. What is the name of the element?
Which of the following statements about heat is false and explain your answer?
a) Heat is a form of energy flow
b) If the system and surroundings are in thermal equilibrium, there is no heat flow between them.
c) A process in which heat flows out of a system is said to be exothermic.
d) If heat flows into a system, the extra energy of the system appears in the form of internal energy.
e) A hot object possesses more heat than a cold object.
What element has the following electron configuration?
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f9 4s2 5p6 6s2
From the Bohr model of the hydrogen atom, we can conclude that the energy required to excite an electron from n = 8 to n = 9 is (less than; greater than; equal to; either equal to or less than; either equal to or greater than) the energy required to excite an electron from n = 9 to n = 10.
How many values are there for the magnetic quantum number when the value of the angular momentum quantum number is 4?
Exactly 273.5 J will raise the temperature of 10.0 g of a metal from 25.0 C to 60.0 C. What is the specific heat capacity of the metal?
The ground-state electron configuration of a Cr2+ ion is 1s2 2s2 2p6 3s2 3p6 3d4. Is this ion diamagnetic or paramagnetic? If the latter, how many unpaired electrons does it contain? Explain your answer.
Consider the decomposition of liquid water to form hydrogen gas and oxygen gas 2H2O(l) -> 2H2(g)+O2(g). What can you say about ?H and ?U? Are ?H and ?U equal or is one greater than the other? Why?
If the location of a particular electron can be measured only to a precision of 0.058 nm, what is the minimum uncertainty in the electrons velocity?
What element has the same valence-shell configuration as tin, but has a larger radius than tin?
An atom in its ground state absorbs a photon (photon 1), then quickly emits another photon (photon 2). One of these photons corresponds to ultraviolet radiation, whereas the other one corresponds to red light. Explain what is happening. Which electromagnetic radiation, ultraviolet or red light, is associated with the emitted photon (photon 2).
Excerpt from file: Physics Tutorial 1. The values of are, Hence the maximum value is 1 2. The equation is reversed and the coefficients are multiplied by 2 hence, ( ) 3. The 2p orbital electron configuration is incorrect. The middle circle should have one electron and the last circle should have one electron not two
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