Write the net equations, the standard cell potential, and the number of electrons transferred in the following electrochemical cells.

Instructions:

Enter all substances in the order listed at the top of the column.

Use a carot to indicate a superscript, but do nothing for subscripts.

Use a hyphen + greater than (->) for yields.

Click on the eye symbol to check your formatting.

Pt/I₂,I^1-//Au³⁺/Au

What is the difference between Addition and Condensation reactions? How does this relate to polymers?

Write a balanced nuclear equation for the following:
When iridium-192 emits a beta particle as it decays

Compare and contrast the molecular structure and performance characteristics of LDPE and HDPE. Provide an example of each type of polymer

Describe two types of methods that can be used to mold plastic products.

Tin (Sn), with a mass number of 126 and an atomic number of 50, decays by beta emission. Identify the product of the nuclear reaction by providing its atomic symbol (2 points), mass number (2 points), and atomic number (1 point).

Uranium (U) has a mass number of 238 and an atomic number of 92 and decays by emission of an alpha particle. The product of this decay is (Points : 5)        uranium (U), with a mass number of 234 and an atomic number of 92.
       lead (Pb), with a mass number of 234 and an atomic number of 91.
       thorium (Th), with a mass number of 234 and an atomic number of 90.
       radium (Ra), with a mass number of 234 and an atomic number of 88.
       thorium (Th), with a mass number of 234 and an atomic number of 91.

Without drawing out correlation diagrams in detail for each 2^nd period homonuclear diatomic molecule separately please show how simple MO theory explains the trends observed in the properties of these molecules shown in the graph. Recall that there are two different energy level orderings, one for Li₂ through N₂ and a different one for O₂ and F₂. You might wish to draw these out separately and write out the electron configurations to explain your answer. Please include the ions in your response.

Consider the Russell- Saunders coupling scheme for two non-equivalent electrons in an excited 2p1 3d1 configuration. For all parts (a) to (c) give your reasoning:

(a) Show that strong coupling between orbital angular momenta (ℓ ℓ coupling) gives rise to P, D and F terms with L magnitudes of 2½ħ, 6½ħ and 12½ħ.

(b) If coupling between spin momenta (s-s coupling) is considered in addition to ℓ ℓ coupling, what six terms arise?

(c) If coupling between the orbit and spin angular momenta is also considered (LS coupling), how many terms arise?

Draw the internuclear potential as a function of nuclear separation for the ground and excited states of a molecule where the equilibrium separation of the (bound) excited state is smaller than that in the ground state. Draw in the vibrational levels for each state, the electronic transition from the ground vibrational state, and the dissociation energies for each electronic state. What should the spectrum look like?

How is the mass of a compound related to its chemical formula?.....I needed some explanations and examples. thanks

What are the various contributions to the linewidth of an atomic or molecular transition and explain their origin.

1. what are the advantages of breast feeding?

2. when is breast- feeding contraindicated or not allowed?

3. plan a 3 day menu for a pregnant mother. include snacks and drinks.
give justifications of your meal plan.

1. why is proper nutrition critical during pregnancy?

2. comment on the saying that "a pregnant mother eats for two."

3. what are the common diet-related problems during pregnancy?
give suggestions to reduce or control such problems.

0.308 g magnesiumsulphate, that contains crystal water, is dissolved in water, så the total volume is 125.0 mL. To completely precipitate the suflation as barium sulfate in 25.0 mL of this solution, 5.0 mL of 0.050 M barium hydroxide is required.

Calculate how many moles of crystal water are in 1 mole of magnesium sulfate.

I am lost in this one, hope for some help :)

Explain the origin of d-d, metal-to-ligand charge transfer, and ligand-to-metal charge transfer transitions for octahedral metal complexes with appropriate molecular orbital diagrams. Also, comment on the allowance of these transitions using appropriate selection rules.

For the exothermic reaction

PCl3(g)+Cl2(g)?PCl5(g)

Kp = 0.200 at a certain temperature.

A flask is charged with 0.500 atm PCl3 , 0.500 atm Cl2, and 0.300 atm PCl5 at this temperature.

What are the equilibrium partial pressures of PCl3 , Cl2, and PCl5, respectively?

Express your answers numerically in atmospheres with three digits after the decimal point, separated by commas.

You have two aqueous solutions: solution A is 20 mL of 1 M MgSo₄. Solution B a 25 mL of 1.5 M Na₂SO₄.

You take 5 mL of solution A and mix it with 10 mL of solution B.

a. What are the total moles of ions in solution A?

b. What are the total moles of ions in solution B?

c. What are the total moles of ions in solution C?

d. What are the total moles of sulfur atoms in solution A?

e. What are the total moles of sulfur atoms in solution B?

f. What are the total moles of sulfur atoms in solution C?

g. Rate the relative electrical conductivity of these solutions (1=least conductive, 3=most)