1) What is the molar concentration of a solution that is made by dissolving 6.30g of sodium chloride and diluting 1.00L?Report your answer to three significant figures.

2) In an experiment, 6.00g of Mg(s) was reacted completely with O2(g) to form MgO(s) and 148.5kJ of heat was evolved. What is the molar emthalpy of formation of MgO(s)? Report your answer in kJ/mol,to three significant figures.

3) What is the de Broglie wavelength of an electron travelling at 4.0X10^7 m/s? Report your answer in metres, in scientific notion, to two significant figures. (Me=9.109X10^-31 kg)

4) What is the energy of a photon having a wavelength of 610nm? Report your answer in joules, in scientific notion, to two significant figures.

5) Write the electron configuration of selenium.

6) Write the chemical equation for the reaction of CO2 with water.

7) What is the electron configuration o a Cu^3+ ion.

8) List the following ions in order of increasing ionic radius: O^2-, F-, Na+, Mg^2+.

9) List the following compounds in order of increasing lattice energy: NaCl, NaBr, MgO, CaO.

10) Draw a Lewis structure for PO4^3- that minimizes formal charges.

Solution Summary

Assorted general chemistry problems are solved showing full working.

1. The wavelength spectrum of the radiation energy emitted from a system in thermal equilibrium is observes to have a maximum value which decreases with increasing temperature. Outline briefly the significance of this observation for quantum physics.
2. The “stopping potential” in a photoelectric cell depends only on the f

Please see the attached file for full problem details.
6. What does the combination of four quantumnumbers (QN) specify?
What does the combination of two quantumnumbers specify?
List the possible values of l if n = 3
List the possible values of ml if l = 3
Which of the following combination of quantum n

Suppose you take a trip to a distant universe and find that the periodic table there is derived from an arrangement of quantumnumbers different from the one on Earth. The rules in that universe are:
1. principal quantumnumber n = 1, 2, ... (as on Earth);
2. angular momentum quantumnumber l = 0, 1, 2, ... n - 1 (as on Ear

1. A hydrogen atom in a certain excited state has its electron in a 5f subshell. The electron drops down to the 3d subshell, releasing a photon in the process.
a) For each of these subshells, give the n and l quantumnumbers, and give the range of possible ml quantumnumbers.
b) Determine the wavelength of light which woul

1. Energy is ____ when an n = 4 to n = 2 transition occurs when an electron adds to the H+ ion and ends up in the n = 3 shell.
a) destroyed, created
b) emitted, created
c) absorbed, emitted
d) emitted, absorbed
e) emitted, emitted
2. Calculate delta(E) if 1 = 1.40 kJ and w = -658 J.
a) -657 kJ
b) 0.742 kJ
c) 1.4

See attachment, please help me, by showing the work so I can use it as a study guide. The questions are regarding quantum theory and the electronic structure of atoms.

(a) The time-independent Schrodinger equation for a free particle moving in one dimension (x) is written as (d^2 Psi(x) / dx^2) + k^2 Psi(x) = 0, where k is a constant.
(i) Show that the following function is a solution to this equation: Psi(x) = A sin(k x)
(ii) Briefly outline why constraining the particle within