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when the windows of a car fog over ( water condenses on the surface) what happens...
the partial molar volumes of two A and B in a mixture in which the MASS...
Write the mechanism of the polymerization between 1,6-hexane diacid chloride and 1,2-ethylenediamine (show all steps and...
A wooden artifact from a Chinese temple has a 14C activity of 44.5 counts per minute...
A buffer contains 0.30 mol CH3COOH (Ka = 1.8 x 10-5) and 0.50 mole CH3COONa in...
Why do we wash with sodium bicarbonate? What gas evolves when washing with sodium bicarbonate?
What is an empirical formula? If i hav 1.0 g each of two substances with the...
Two Samples, weighing 0.1024g and 0.9991g, are obtained from an unkown copper ore, ttreated with acid,...
Calculate the pH and the concentrations of all species present (H3O+, OH?, HIO3, and IO?3) in...
Melting Point determination. Compare the sample melting point value that was obtained in the lab (which...
A) When the following equation is balanced properly under acidic conditions, what are the coefficients of...
What is a bulky base in regards to elimination reactions? Other than t-BuO . Looking for...
Sulfuric acid is a very strong acid that can act as an oxidizing agent at high...
Looking to find the molarity and molar mass of TEABF4 that has the following: Pressure =...
Consider the reaction: 4CO(g)+2NO2(g)?4CO2(g)+N2(g) Using the following information, determine ?H? for the reaction at 25?C. NO(g)...
Complete combustion of 6.90 g of a hydrocarbon produced 22.2 g of CO2 and 7.57 g...
1) Why do you suppose that the dehydration of cyclohexanol to cyclohexene has been the traditional...
1.) 0.54 L of CO2 is collected over water at 25oC. The total pressure in the...
please answer the questtion and explain the reason: In which of the following substances is hydrogen...
1) What is the concentration of acetic acid in the 0.100M pH 5.000 buffered solution? Note...
how to factor trinomials that are the product of simular binomials ?
Calculate the solubility (in g·L–1) of CuBr(s) (Ksp = 6.3× 10–9) in 0.47 M NH3(aq).
if 4.03 g of Ar are added to 3.01 atm of He in a 2.00 L...
List a possible set of four quantum numbers (n , ℓ , m ℓ , m...
Consider the malate dehydrogenase reaction from the citric acid cycle. Given the following concentrations, calculate the...
Mainly a Chem Eng Q. Trying to study for my exams but the solution is not...
Is it generally true that an alkene will have a boiling point less than the boiling...
A student is given 300.0 ml of a 1.10 M HNO2 solution. The Ka of the...
A buffer contains 0.50 mol NH4+ and 0.50 mol NH3 diluted with water to 1.0 L....
1) For iodine gas [ I2(g) ], deltaHf = 62.4 kJ/mol and S = 260.7 J/mol-K....
The diameter of a H2 molecule is about 2.5 Å. For H2 gas at 0o C...
Part A: A balloon is floating around outside your window. The temperature outside is 35 ∘C...
A sample of ideal gas at room temperature occupies a volume of 17.0 L at a...
how many grams of N2 (28.01 g/mole) can be obtained by reacting 24.5 g of NH3...
explain why a semi crystalline polymer is usually translucent while an amorphous one might not be....
Determine the [H3O+] and the pH of a 0.250 solution of Carbonic acid; Ka1 = 4.3...
Chlorine gas can be made from the reaction of manganese(IV) oxide with hydrochloric acid: MnO2(s) +...
What is the Molarity and uncertainty of the molarity of a BaSO4 solution that is prepared...
Part A For the reaction 2Co3+(aq)+2Cl−(aq)→2Co2+(aq)+Cl2(g). E∘=0.483 V what is the cell potential at 25 ∘C...
Dry ice is solid carbon dioxide. Instead of melting, solid carbon dioxide sublimes according to the...
You wish to measure the concentration of methyl benzoate in a plant stream by gas chromatography....
How much mass change per mole of uranium-235 using the exact mass of isotopes and neutons...
Acetylene gas, HCCH, is commonly used in high temperature torches. a) write a chemical equation for...
What is the vapor pressure (in kPa) of ethanol, CH3CH2OH, over a solution which is composed...
Calculate the pH of a buffer, consisting of 0.42 M HF and 0.42 M F -,...
Electrophilic Aromatic Substitution//Nitration of Bromobenzene Reagents used: nitric acid, sulfuric acid, bromobenzene 1) During the isolation...
under certain conditions the reaction of ammonia with excess oxygen will produce a 29.5 percent yield...
Electrophilic aromatic substitution // Nitration of Bromobenzene Used: nitric acid, sulfuric acid, and bromobenzene Post-lab Question...
KMnO4 is used as the titrant in a potentiometric titration of tin(II) to tin(IV), using a...
1. What is the number of ATP obtained from one acetyl CoA in the citric acid...
How much heat is evolved in converting 1.00 mol is steam at 150.0 C to ice...
suppose you have as much 0.03200 M KMnO4 as you need. State exactly what data must...
suppose use air( 79 % mole N2 and 21 % mole O2, molecular weight of 29)...
Which of the following is correctly ranked in order of increasing bond energy? (1) C−C <...
High levels of Pb+2 ions made Flint's water corrosive. Suppose Flint has 100 milligrams of Pb+2...
Find the H3O+ concentration of a 0.210 M hypochlorous acid solution (whose acid dissociation constant is...
Dinitrogen pentoxide (N2O5) decomposes in chloroform as a solvent to yield NO2 and O2. The decomposition...
Derive/explain the how thermal conductivity can be explained in terms of the kinetic theory of gasses.
Exercise 18.46 Calculate the standard cell potential for each of the following electrochemical cells. Part A...
Which is expected to have the most negative standard enthalpy of formation? Which is expected to...
5.0kg/s cyclohexane is pumped from a height of 2.5m to a height of 15m. Before the...
Calculate the change in pH when 5.00 mL of 0.100 M HCl(aq) is added to 100.0...
Complete combustion of 9.00 g of a hydrocarbon produced 28.9 g of CO2 and 9.87 g...
32P is a radioactive isotope with a half-life of 14.3 days. If you currently have 10.1...
. A solution of hypochlorous acid (pKa = 7.53) with an initial volume of 50.0 mL...
Complete the following table. [ H3O+ ] [ OH− ] pH pOH Acidic or Basic? a)...
Using the following atomic weights and that the density of cyclohexanol is 0.96, what is the...
If a solution containing 25.95 g of mercury(II) chlorate is allowed to react completely with a...
Show calculation for the assigned buffer. Recall: [acid] + [base] = 0.20 M. Calculate the individual...
can someone please discuss the quality of our water supply, or your perception of the quality...
In 250 mL of solution the following is dissolved: 40 mg calcium chloride 40 mg calcium...
Calculate the concentration of flouride ions in a saturated barium fluoride solution (given ksp for Barium...
When Determining the Solubility of an Unknown Salt at Various Temperatures lab, what procedure change for...
Lutein can be used as a coloration pigment, due to its orange-red color at high concentrations,...
The Dutch scientist Johannes van der Waals developed a useful equation to predict the behavior of...
#34. A buffer solution contains 0.71 mol of hydrogen peroxide (HOOH) and 0.41 mol of sodium...
What is the value of ΔGo in kJ at 25 oC for the reaction between the...
you have to make a buffer at pH= 5.00. From the buffer system you chose above...
Problem 6.75 Write the condensed electron configurations for the following atoms, using the appropriate noble-gas core...
A fixed quantity of gas at 21 ∘C exhibits a pressure of 756 torr and occupies...
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