Molecule A has hydrogen bonds; Molecule B is non - polar. Which of the molecular liquids will have the higher boiling point? Why? Also, which of the molecular liquids will have the lower vapor pressure? Why?

You are the brewmaster at a local craft brewery. In an effort to cut costs, you have been tasked to develop a procedure to recover the carbon dioxide generated during the fermentation process. This recovered carbon dioxide will be used to later carbonate the beer before it is bottled. During fermentation, sucrose (C12H22O11) dissolved in water is broken down into ethanol (CH3CH2OH) and carbon dioxide by yeast. The carbon dioxide is then released into the space above the reaction where it is then captured using your novel device. To test your recovery method, you sprinkle 22 g of dry yeast into a rigid glass container that contains 10 gallons of water (1 gallon=3.78 liters). Then you add 4.5 kg of sucrose to simulate the wort (the sugary liquid that will be fermented into beer). The volume of the rigid glass container is 10.5 gallons and the fermentation temperature is controlled using a water bath set to 25°C.

a) Write a balanced equation for the fermentation process, including phases of each compound.

b) Calculate the volume of carbon dioxide that is released by the fermentation of 4.5 kg of sucrose. You can assume that the carbon dioxide is collected and kept at a constant pressure of 1 atm in a storage tank.

c) To properly carbonate your 10 gallon batch of beer, you need approximately 100 L of carbon dioxide at 1 atm. How many batches of beer can you carbonate with the amount of carbon dioxide generated by your experiment?

d) How much ethanol is produced during the fermentation of 4.5 kg sucrose. Express your answer in gallons.

e) Calculate the amount of heat generated by the fermentation of 4.5 kg sucrose. Express your answer in kJ.

1/ Calculate the volume of 0.280-M NaOH solution needed to completely neutralize 27.4 mL of a 0.560-M solution of the monoprotic acid HBr.

2/ To determine the molar mass of an organic acid, HA, we titrate 1.047 g of HA with standardized NaOH. Calculate the molar mass of HA assuming the acid reacts with 37.17 mL of 0.469 M NaOH according to the equation

HA(aq) + NaOH(aq) → NaA(aq) + H₂O(ℓ)

3/

2 NaBH₄(aq) + H₂SO₄(aq) → 2 H₂(g) + Na₂SO₄(aq) + B₂H₆(g)

What volume, in mL, of a 0.504 M solution of NaBH₄ is required to produce 0.539 g of B₂H₆? H₂SO₄ is present in excess.

please help me with all the questions i really need help to prepare for final!

Why is platinum the element of choice to study the trans effect?

31. What is the initiator in the polymerization of isobutylene? 


32. What is the general name of the product produced by cationic initiation? 


33. What reactant besides the monomer is present in cationic chain propagation reactions? 


explain the observed absorption maxima of each of the following molecules:

a) nitrobenzene, 252 nm

b) 2-nitrotoluene, 250 nm

c) 2-isopropylnitrobenze, 247 nm

d) 2-t-butylnitrobenzene, no peak

They are all being observed in UV-vis spectroscopy (200 - 800 nm)

In addition to this, the question also asks to provide 3D structures which i think i have a grasp of. I dont know, however, if they are necessary to answer this question but i am lost on explaining the absorption maximas.

Thank you in advance!

In each of the following balanced oxidation-reduction equations, identify those elements that undergo changes in oxidation number and indicate the magnitude of the change in each case

Part A

2MnO4−(aq)+3S2−(aq)+4H2O(l)→3S(s)+2MnO2(s)+8OH−(aq)

Enter your answers as chemical symbols separated by a comma.

Part C

4H2O2(aq)+Cl2O7(g)+2OH−(aq)→2ClO2−(aq)+5H2O(l)+4O2(g)

Enter your answers as chemical symbols separated by a comma

Ba2+(aq)+2OH−(aq)+H2O2(aq)+2ClO2(aq)→Ba(ClO2)2(s)+2H2O(l)+O2(g)

Enter your answers as chemical symbols separated by a comma

A certain weak acid, HA , has a Ka value of 2.2×10⁻⁷.

Part A

Calculate the percent ionization of HA in a 0.10 M solution.

You are searching for an inexpensive synthetic route to make anthraquinone to use it as the active component in a new laxative formulation. Reaction of benzene and phthalic anhydride yielded a yellow solid thought to be anthraquinone. Combustion analysis of 0.520 g of the yellow solid yielded 1.54 g of carbon dioxide and 0.180 g of water; (all carbon dioxide and water formed by combustion were isolated and weighed). In another experiment, the molar mass of the yellow solid was found to be approximately 205 g/mol. Use the analysis information above to determine the molecular formula of the yellow solid.

At 300K, the vapor pressure of pure liquid A and liquid B are 37.33 kPa and 22.66 kPa respectively. If we mix 2 mol liquid A with 2 mol liquid B, the total vapor pressure above the solution is 50.66 kPa and the molar fraction of vapor A is 0.60. Assume the vapor is an ideal gas. Calculate (a) the activity of A and B in the solution (b) the Gibbs energy change of mixing ΔmixG (c) If the solution is an ideal solution, what’s the number of ΔmixGid?

What mass of a solid hydrate of iron (III) sulfate that is 76.3% by mass iron (III) sulfate is needed to supply 1.00 g of iron (III) ion? How many moles of carbon atoms are present in 2.41 x 1022 molecules of acetic acid? How many chloride ions are supplied by 1.00 g of chromium (III) chloride hexahydrate? What mass in grams of cobalt(II) nitrate hexahydrate supplies 0.200 g of cobalt (II) nitrate? What mass in grams of oxalic acid dihydrate supplies 3.01 x 1021 oxygen atoms?

On a day with a temperature of 15 ∘C and a pressure of 792.0 torr , how many grams of peroxyacyl nitrates are found in the air above Los Angeles (1500. km3) if the concentration is 30.0 ppb by moles? The molar mass of the major peroxyacyl nitrate, peroxyacetyl nitrate, is 118.03 g/mol.

Calculate the pH after adding 5.00 mL of 0.15 M HNO₃ to 250 mL of an acetic acid/acetate buffer with an initial pH of 4.32 and a total buffer concentration of 0.25 M. Neglect activity coefficients for this problem.

The specific rotation, [α]D, for (-)-2-butanol is +14. What is the observed rotation for a solution of 1.0 g of (-)-2-butanol in 10 mL of water in a sample tube having a pathlength of 10 cm? ??????degrees .

The observed rotation of a solution of 1.5 g of a compound in 10 mL of water is +3.4 degrees. If the pathlength is 10 cm, what is the specific rotation of the compound? .