Identify the g or u character of bonding and antibonding sigma orbitals formed by face-to-face overlap of d atomic orbitals

Arrange the following compounds in order of increasing acidity, and explain the reasons for your choice of order: cyclopentanol, phenol, p-nitrophenol, and 2- chlorocyclopentanol.

Balance the following reactions in BASIC conditions. Show all steps.

1) Mg + NO₃^-1 ---> Mg ⁺² + N₂

2) MnO₄^-1 + H₂SO₃ ---> Mn²⁺ + SO₄^-2

3) Cl^-1 + MnO₄^-1---> ClO₃^-1 + MnO₂

4) MnO₄^-_(aq) + Fe²⁺_(aq) ---> Mn²⁺_(aq) + Fe³⁺_(aq)

The standard heat of formation of PI3(s) is -24.7 kJ/mol and the PI bond energy in this molecule is 184 kJ/mol. The standard heat of formation of P(g) is 334 kJ/mol and that of I2(g) is 62 kJ/mol. The I2 bond energy is 151 kJ/mol.

Calculate the heat of sublimation of PI3

(a) Why does one have to ensure that a function is properly normalized?

(b) Normalize the function e^-r over the interval 0≤ r ≤ inf; 0≤ θ ≤ π; 0≤ ϕ ≤2π

what is the difference betweeen theoretically determined and experimentally determined molar massess. which one is more accurate?

U-236 is an important neutron poison in reactors that is created in uraniumbased fuels from U-235 capturing a neutron. Derive an expression for the time at which the peak U-236 concentration occurs. Note that not all neutron absorption by U-235 becomes U-236; some U-235 atoms fission.

The activation energy for a particular reaction is Ea = 13.40 kJ. What percentage of the molecules are at or above the activation energy at 500.0 K?

a 374 ml container holds 0.146g of Ne and an unknown amount of argon at 35°C total pressure =638mmHg calculate moles of Ar present

The lab name is Electrochemical Determination of entropy of mixing

Explain briefly why complementary solutions were used in this experiment. How does this experimental design effectively simulate the hypothetical reversible mixing process discussed earlier in the notes( earlier in the notes I put reversible happen infinitesimally slow)? What is wrong with measuring the voltage of a cell containing only one solute component on each side (i.e., Fe(II) of a given molality on one side and Fe(III) with the same molality on the other)?

1) A piece of magnesium weighing 2.00 gr. is dropped into 100 mL of 2.00 M H2SO4 when the reaction has ceased which of the reactants remains in excess and by how much? (Write the chemical reaction that takes place.) 

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5- How many mL of 2.0 M H2SO4 would be required to react with 25.0 gr. of zinc? 

(Write the chemical reaction that takes place.)
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6- What is the molarity of a solution which contains 25.0% H2SO4 by weight and which has a density of 1.13 gr/mL? 


Write a 1,050- to 1,400-word article based on your notes. Include the following:

Scene(s) identified that represent an application of DNA technology

Scene(s) identified that could be used in an application of DNA technology

Identification of ethical concerns arising from applications of DNA technology

Identification of legal concerns arising from applications of DNA technology

Identification of social concerns arising from applications of DNA technology

Calculate the molarity and normality of the following compounds:

a.80 μg/L HNO^3

b.135 μg/L CaCO^3

c.10 μg/L Cr(OH)^3 – Chromium(III) hydroxide will dissociate in water to form a chromium ion and 3 hydroxide ions. The charge of 1 hydroxide ion is -1. The number (III) should also give you a hint to determine n.

Which statements regarding shape and charge complementarity are true?

1. Charge complementarity occurs when specific noncovalent binding interactions occur between two contacting surfaces.

2. The "charge" interactions can be charge-charge, H-bonding, or van der Waals interactions.

3. Shape complementarity refers to the intimate contact made between an antibody and its target antigen.

4. Shape and charge complementarity explain exclusively the interactions between an antibody and its target antigen.

a) Only statements 1, 2, and 3 are true.

b)Only statements 2, 3, and 4 are true.

c) Only statements 1, 2, and 4 are true.

d) All of the listed statements are true.

Two intracellular molecules A and B, are normally synthesized at a constant rate of 1000 molecules per second per cell. The degradation rate of A is 0.01/s and B is 0.1/s

A}Write a differential equation to describe how the number of molecules of A and B change over time

B}What is the steady state value of A and B? How many molecules of A and B will there be after 1 second at steady state?

C}If the rate of synthesis of both A and B were suddenly increased 10-fold to 10,000 molecules per second—without any change in their degradation rate—how many molecules of A and B would there be after one second?

D}Which molecules would be preferred for responding rapidly changing environment? Explain your answer