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For which of the following reactions is delta S at 25 degrees Celsius closest to zero?...
Why does the strength of an acid affect the enthalpy of neutralization? How is this important...
A 0.0720 L volume of 0.132 M hydrobromic acid (HBr), a strong acid, is titrated with...
1) For iodine gas [ I2(g) ], delta H= 62.4 kJ/mol and S = 260.7 J/mol-K....
What is the cause of osmotic pressure? Why must the osmolality of an intravenous solution match...
Given the reactants ch3ch2o- + nh3 complete the acid base reaction and explain equilibrium favorability.
Calculate the probability that a particle will be found between 0.49a and 0.5a in a box...
Barium sulfate is made by the following reaction: Ba(NO3)2 (aq) + Na2SO4 (aq) ? BaSO4 (s)...
Calculate the pH of a solution with [H3O+] = 1.0 x 10-8 M please explain
Protein concentration can be estimated by measuring the absorbance of protein-containing solutons using UV light. Give...
Multiple choice question: PLEASE SHOW WORK, THANK YOU!!!! At a certain temperature (T), the value of...
The hydrogenation of ethylene occurs by the following equilibrium: C2H4 (g) + 2 H2 (g) 2...
Pure nitrogen at 160°C and 2 atm enters a cylinder whose inner walls are coated with...
Would you please give me step by step instruction on the following. What is the major...
3.Phosphate-buffered saline (PBS) is a buffer solution commonly used in biological research. Most formulations contain a...
Determine the shape of the AsF5 molecule. According to the valance bond theory, the hybrid orbitals...
The solubility-product constant for Zn(OH)2 is Ksp=3.00×10−16. The formation constant for the hydroxo complex, Zn(OH)42−, is...
Calcutate the percent ionization of nitrous acid in a solution that is 0.219M in nitrous acid....
How many grams of Li3N can be formed from 1.75 moles of Li and 1.86 moles...
SN2 Reaction: Alkyl halides treated with NaI in acetone: How did the substrate structure and sterics...
The aerobic degradation of 2,4-DNT (C7H6N2O4) is as follows: C7H6N2O4 + 5.62O2 → 5.17 CO2 +...
Which would form a buffer if added to 295 mL of 0.380M HCl? Please explain why...
The fluorocarbon compound C2Cl3F3 has a normal boiling point of 47.6 ∘C. The specific heats of...
a.) A valid lewis structure b.) A 3-D representation using wedge and dash drawing c.) clearly...
ideal gases are kept in three separate bottles A, B, C, each having the same volume...
Calculate the pH of 25.0 mL of a 0.050 M solution of acetic acid after the...
For a gaseous reaction, standard conditions are 298 K and a partial pressure of 1 atm...
Calculate pka1 , pka2, pka3 for Arsenic acid (H3AsO4) using Paulings rules. Are numbers close to...
A 25.0 mL sample of an acetic acid solution in titrated with a 0.09984 M NaOH...
By a common principle used in mass spectrometry, what element is most likely to be present...
Assume that in the reaction of the formation of gaseous hydrogen fluoride from hydrogen and fluorine,...
How are PRIMARY, SECONDARY, TERTIARY and AROMATIC ALCOHOLS distinguished in the IR spectrum and how are...
Assume that the reaction for the formation of gaseous hydrogen fluoride from hydrogen and fluorine has...
A Study in Spontaneity Data and Analysis 100.00 mL distilled water Calculated mass of KNO3 from...
What observed rotation is expected when a 1.44 M solution of (R)-2-butanol is mixed with an...
How is a detonation defined? Why do some explosives detonate, whereas others do not?
Briefly describe two common methods to perform standard addition.
Calculate the pH of the following salt solutions 0.427 M NaC2H3O2 0.289 M CH3NH3Cl
Determine the mass of glucose (C6H12O6) that needs to be added to 0.500 kg of water...
Always looking for new ways to start a fire, Amanda discovers that potassium chlorate, sucrose, and...
Nitration Lab: Suppose your lab mate wants to make 2,4-dinitrobromobenzene from bromobenzene using a variation of...
1.) A. The __________ shell is the outermost electron-occupied shell of an atom. It holds the...
A coffee-cup calorimeter can be used to study the "cold pack reaction," the process that occurs...
A) Determine the [H3O+] of a 0.240 M solution of formic acid. B) Determine pH of...
Why does atomic radius decrease from left to right across a period and what are the...
a) Rank the compounds in order of decreasing freezing point. C6H12O6 , NaNO3 , MgCl2, NaCl
The concentration of arsenic in an insecticide is determined gravimetrically by precipitating MgNH4AsO4 and isolating Mg2As2O7....
1. Liver pyruvate kinase is activated by dephosphorylation in response to glucagon. answer true or false...
The chemical shift of a CH3 proton in ethanol is δ = 2.20 and the CHO...
An decrease in the temperature of the reactants causes an decrease in the rate of reaction....
Exactly 16.7 mL of water at 32.0°C are added to a hot iron skillet. All of...
You work in an industrial lab (no TA) that tests soil samples for heavy metals. When...
A co-worker in a biochemistry laboratory suggests to you that a buffer solution with a pH...
What is corrosion? Why is corrosion only a problem in some metals (such as iron)?
When a lithium nucleus reacts with a proton according to the reaction 7Li+1H --> 2 4He,...
Our sample was made of NiSO4 ∙ 6H2O and NH3 and ethanol. If the sample of...
For the following reaction at equilibrium, select all of the stresses which will cause the reaction...
1. The standard reduction potential for the reduction of Eu3+(aq) to Eu2+(aq) is -0.43 V. Using...
Part B What is the atomic symbol of another isotope of nickel with 35 neutrons? Express...
How is polarity of a "bond" different than polarity of a "molecule?" What makes a particular...
� Gibbs Free Energy: Equilibrium Constant Nitric oxide, NO, also known as nitrogen monoxide, is one...
Balance out these equations: FeSO4 + K4Fe(CN)6 = Fe4[Fe(CN)6]3 + ?? FeSO4 + K3Fe(CN)6 = ??...
Find pH of 0.105 M in formic acid and 5.0×10−2 M in hypochlorous acid
PART A: A buffer is created by mixing 0.10 mol of acetic acid and 0.13 mol...
Determine the total concentration of CO2 solution whose pH 4.5. pKa of H2CO3 = 3.6 and...
Potassium acid phthalate, KHC8H4O4, or KHP, is used in many laboratories, including general chemistry laboratories, to...
calculate the expected ph of .1M solution of ammonium chloride given that Kb for ammonia is...
• A solution is made with 1.1×10-3 M Zn(NO3)2(aq) and 0.150 M NH3(aq) After the solution...
an acid base indicator like bromocresol green is blue under basic conditions and yellow under acidic...
an unknown sample consists of 1 sugar. it gives a positive Benedict's test, but negative results...
What are the pros and cons of globalization?
Consider the square planar molecule XeH4. a) Determine the symmetries of and then draw the H4...
The first-order rate constant for the decomposition of a certain antibiotic in water at 20o C...
1) What is the advantage of using pyridinium bromide perbromide as brominating agent? 2) (E)-Stilbene (500...
How many molecules (not moles) of NH3 are produced from 7.68×10−4 g of H2?
Part A-Calculate the mass percent (m/m) of a solution prepared by dissolving 45.05 g of NaCl...
13.0 moles of gas are in a 7.00 L tank at 20.5 ∘C . Calculate the...
#25 A 10.86 mol sample of krypton gas is maintained in a 0.7529 L container at...
What causes different sizes of silver nanoparticles to appear as different colors in solution?
In a bromination of stilbene, why is this procedure considered to be “greener” than bromination methods...
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