145&146&147. The potential of a silver electrode is measured relative to an Ag-AgCl electrode for the titration of 100.0 mL of 0.100 M Cl with 0.100 M Ag+. What is the potential after 75.00 mL of titrant is added. Eo = 0.799 V for Ag+, E = 0.197 V for the Ag-AgCl electrode and Ksp = 1.8 × 10−10.

A) 0.493 V

B) 1.070 V

C) 0.521 V

If a TLC plate was done in acetone and hexane which would have a higher rf value:

1. Benzenaldehyde or 1,4-Pentadien-3-one, 1,5-diphenyl-?

2.Benzenaldehyde or 2,2’-(phenylmethylene)bis(5,5-dimethylcyclohexane-1,3-dione)?

3. Benzenaldehyde or 3,3,6,6-tetramethyl-9-phenyl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione?

You carry out the titration of 35.00 mL of 0.1750 M pyridine using a 0.275 M HCl solution. Pyridine has a pKb = 8.77

What is the pH at:

0 ml HCl added

5.0 ml HCl added

half equivalence point for HCl

half equivalence point for pyridine

17.0 ml HCl added

21.0 ml HCl added

equivalence point

26.0 ml HCl added

Which of the following compounds, when added to a 1.0-M solution of HClO₄, has a solubility greater than in pure water? Select all that apply.

Group of answer choices

Cr(ClO₄)₃

Ca₃(PO₄)₂

PbI₂

ZnS

AgBr

BaF₂

can you explain and compare chain polymerization can you give examples of each case

A 77.0 mL sample of 0.0400 M HNO₃ is titrated with 0.0800 M CsOH solution. Calculate the pH after the following volumes of base have been added.

Question 4.

1. Draw a simple molecular orbital diagram for the carbon monoxide (CO) molecule and explain, using an accurate bonding description, how this molecule can act as a ligand within metal carbonyl compounds.
2. Explain why CO possesses one infrared (IR) active vibrational mode u(CO), whereas, the di-nitrogen molecule, N₂, does not?
3. Using your bonding description from part (i.), together with the knowledge that CO ligands contain an IR active vibrational mode, explain the variations in u(CO) cm^-1 values which arise for the following isoelectronic complexes:
   

Calculate the freezing point and boiling point of each aqueous solution, assuming complete dissociation of the solute. Use Kf=1.86∘C/m and Kb=0.512∘C/m.

Part A
Calculate the freezing point of the solution containing 0.118 m K2S.

Part B
Calculate the boiling point of the solution above.

Part C
Calculate the freezing point of the solution containing 25.2 g of CuCl2 in 480 g water.

Part D
Calculate the boiling point of the solution above.

Part E
Calculate the freezing point of the solution containing 7.5 % NaNO3 by mass (in water).

Part F
Calculate the boiling point of the solution above.

20.0 mL of 4.00 M HF and 40.0 mL of 2 M HCL are mixed.

What is the PH of the solution if the Ka of HF is 6.8 x 10^-4

Rank the following five salts in order of decreasing solubility, in terms of mass per unit volume.
(The most soluble gets rank 1, the least soluble gets rank 5.)

Hg₂CO₃     (K_sp = 9.00×10^-15; Note: The cation is Hg₂²⁺)
Hg₂Cl₂     (K_sp = 1.10×10^-18; Note: The cation is Hg₂²⁺)
Ca₃(PO₄)₂     (K_sp = 1.30×10^-32)
Ag₃PO₄     (K_sp = 1.80×10^-18)
Ca₅(PO₄)₃OH     (K_sp = 6.80×10^-37)

This is the 2nd time I've posted this question because previously people just listed it in order of the KSP that's given in the question. That is INCORRECT. I need to convert it to mass/volume. I've tried it 4 times and I keep getting the answer wrong.

A 16.0 gram sample of propane gas (C³H⁸) is burned according to the equation C₃H₈(g) + 5O₂(g) → 3CO₂(g) + 4H₂O(g).

In an enclosed container with a volume of 2.25L at a temperature of 322K.

If the sample of propane burns completely and no oxygen remains in the container, calculate the mole fractions of CO₂ and H₂O.

Calculate the total pressure in the container after the reaction.

Calculate the partial pressure of CO₂ and H₂O in the container after the reaction.

If 12.1 grams of propane is burned in the presence of 10.2 atm of oxygen at the above temperature and volume conditions, determine the theoretical yield of H₂O.

Assign NMR peaks to the following Structure. And desribe the Spectra as you would for a formal report. Please help at least give some advice on how to start this, although full answer would receive more points! http://imgur.com/ozaSOML

a) Increasing the flow rate of the mobile phase would

1. increase longitudinal diffusion.

2. increase broadening due to mass transfer.

3. increase broadening due to multiple paths.

b) How many 50 mL extractions will it take to remove 95% of Compound A that is in 20 mL of water, if K = 0.3?

A single extraction with 100 mL of CHCl₃ extracts or removes 88.5% of the weak acid, HA, from 50 mL of aqueous solution. What is the Distribution coefficient, D, for HA at a pH = 3.00? The K_a for HA is 3.5 x 10^-5.