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What amino acids are common in alpha helix? And what amino acids are common in beta...
Please show me the IR spectra sheets for the following pure compounds and fully annotate them:...
Explain how the type of compound (-ane,ene,yne) can determine hybridization of hydro carbons, and how may...
Consider these reactions, where M represents a generic metal. 2M(s)+6HCl(aq)⟶2MCl3(aq)+3H2(g)ΔH1=−819.0 kJ2M(s)+6HCl(aq)⟶2MCl3(aq)+3H2(g)ΔH1=−819.0 kJ HCl(g)⟶HCl(aq) ΔH2=−74.8 kJHCl(g)⟶HCl(aq) ΔH2=−74.8 kJ H2(g)+Cl2(g)⟶2HCl(g)...
For the following reaction, Kc = 255 at 1000 K. CO (g) + Cl2 (g) ⇌...
What is extraction? a. the seperation of a gas from a liquid solvent b. the removal...
Create a spreadsheet that will calculate fractional composition for a diprotic acid given the equilibrium constants.
38.0 mL of 1.20 M perchloric acid is added to 16.9 mL of sodium hydroxide, and...
1) A certain substance has a heat of vaporization of 36.02 kJ/mol.36.02 kJ/mol. At what Kelvin...
Both Fand [CN]- are negatively charged ligands, yet F - generates a weak crystal field whereas...
What key properties must an analyte have in order to be quantitated using gas chromatography?
What type of Fe-Fe bodn is present (i.e. single, double, triple, etc)? [(η5-C5H5)Fe(CO)2]2
a) When can a real gas behave as an ideal gas? b) What happens to a...
A compound which analyses as CrBr3.3H2O has an experimental magnetic moment of 3.87 Bohr Magnetons (B.M.)....
how prepare aqueous solution : 355ml of 0.0956M LiNo3 from 0.244M LiNo3 (MLiNo3=69g/mol)
explain the observation upon which rutherford reached the following conclusion: 1- there is a very dense...
Different Ways of Expressing Concentration An aqueous antifreeze solution is 35.5% ethylene glycol (C2H6O2) by mass....
Carbonyl fluoride, COF2, is an important intermediate used in the production of fluorine-containing compounds. For instance,...
A 19-carbon fatty acid is catabolized. a. How many rounds of oxidation are required? b. What...
How can you tell if a Carbon Atom is sp3 hybridized? Is it just a carbon...
1. (a) explain the physical meaning of affinity. (b) What is the value in chemical equilibrium?...
An aqueous solution contains the amino acid glycine (NH2CH2COOH). Assuming that the acid does not ionize...
calculate the pH of a 0.15 M solution of FeSO 4
For tetrahedral complexes, we have been drawing the e (dz^2 and dx^2-y^2 ) orbitals on the...
Given the following information: 1.6g of an unknown monoprotic acid (HA) required 50.80mL of a .35M...
The value of Kp for the reaction: 2NOBr <----> 2NO + Br2 is 9.6 x 10-3...
In this experiment you will construct a smal electrolytic cell. Then using indicators you will determine...
What is the half life of an isotope that decays to 12.5% of its original activity...
Calcium hydride, CaH2, reacts with water to form hydrogen gas: CaH2(s)+2H2O(l)→Ca(OH)2(aq)+2H2(g) This reaction is sometimes used...
a) Write the net-ionic equation for the reaction of HCl with NH4C2H3O2 b) Write the net-ionic...
Draw the structures of the organic products of the claisen condensation reaction between ethyl phenylacetate and...
1(a) Effusion refers to the process that gas molecules are escaped from a container through a...
A series of line in athe spectrum of atomic hydrogen lie at the frequencies shown below....
What are the long and condensed electron configurations for Bi?
Suppose that you decompose 25.66 g of Ni2O3, which has a molar mass of 165.39 g/mol,...
For question 3 and 4, answer the questions based upon this process: 100.0 mL of 0.25...
3.68 kg of strontium nitrate are added to 5.50 kg of water. The solubility of strontium...
What is volume of one aluminum atom? (show your work) What is the largest area of...
Calculate the pH of the solution that results from each of the following mixtures. a) 140.0...
What amount of thermal energy (in kJ) is required to convert 216 g of ice at...
QUESTION 3: A carboxylic acid salt is more soluble in water than the carboxylic acid. a.)...
1)Is it True or False: Samples must be cooled to room temperature before weighing. Explain your...
Rose gold is an alloy which consists of 25 % copper and 75 % gold. Identify...
A solution is prepared by dissolving 25.00 g of acetic acid (CH3COOH) in 750.0 g of...
The other day at school I picked up a broken thermometer the one that's U shaped,...
Why is it that when one of my older silver tooth fillings comes into contact with...
The thiocyanate ion (SCN-) has three possible resonance structures. Draw the three structures, calculate the formal...
What happen to a nucleus that undergoes alpha decay? A. the number of protons and neutrons...
Please explain what a Gilman reagent is. Give examples. (I'm a visual learner). Please explain, thank...
Consider the synthesis of tert-amyl chloride (2-chloro-2-methylbutane) from 2-methyl-2-butanol and HCl which has SN1 reaction. Explain...
A)The activation energy of a certain reaction is 33.8 kJ/mol . At 30 ∘C , the rate...
A 5.25mL sample of a 0.100M solution of an aromatic hydrocarbon dissolved in hexane is excited...
What is the Orbital Diagram for Sn2+? Diamagnetic or paramagnetic? Why?
Calculate the value of ψ1s for the hydrogen atom, the He+ ion, and the Li2+ ion...
You have a stock solution of rifampicin at a concentration of 3.5 g/ml. You need to...
Calculate the mole fraction of ethyl acetate, in a toluene-ethyl acetate mixture if you mix 1...
Which of the following substances will react more strongly with each other (select the best reducing...
How can you calculate the heating value of liquid propane? Please show an equation
Data: 8.0 grams of CuSO4 • 5H2O in a 125 mL Erlenmeyer flask: 8.130 grams 1)...
Describe the chemical structural features that can increase the crystallinity of the polymer.
Example of electron donating and electron withdarwing groups are: (a) -CH3, -NH2 (b) -OCH3 and -CH3...
What is reverse phase and which compound will eluted first (acetamide, acetone,, and dichloroetane) in a...
Which reaction(s) will have a positive entropy change? Select all that apply. Entry field with incorrect...
What are enzymes and what do they do for the cell? Why does a cell need...
Data Record 1. Temperature of the water = ______18___ oC 2. Table for recording mass of...
3. An enzyme can catalyze a reaction with either of two substrates, S1 or S2. The...
3. A naturally occurring acidic red pigment extracted from the cochineal insect contains only carbon, hydrogen...
13) a 0.10 HF solution is 8.4% ionized. Calculate the H+ ion concentration. Someone solve this...
the titration of an impure sample of KHP found that 36.0 ml of 1.00M NaOH was...
Many metabolic reactions are coupled reaction. Such as the first step in glycolysis drawn below: Glucose...
Hydrocarbon mixtures are used as fuels. What mass of CO2 gas is produced by the combustion...
Swimmers experience decrease in visibility on diving to greater depths. Given that the mean molar absorption...
For a particular reaction, delta H is 67.6 kJ/mol and delta S is 126.9 J/(molk). Assuming...
rank Ca, Cu, Fe, Mg, Sn, and Zn in terms of increasing reactivity. rank most (if...
Each electron in an atom may be described by a set of four quantum numbers. For...
Determine the enantiomeric excess of this lab experiment: NOTE: Please be through in your explaination Racemic...
A liquid has an enthalpy of vaporization of 30.8 kJ/mol. At 273 K it has a...
An electron in an excited state of a hydrogen atom emits two photons in succession, the...
Consider a solution of 0.36 M C2H5NH2 (Kb = 5.6×10-4). Decide if each of the following...
What is the pH of a 0.25 M solution of KCOOH?
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