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For the diprotic weak acid H2A, Ka1 = 2.3 × 10-6 and Ka2 = 8.7 ×...
The Kb for an amine is 1.448 × 10-5. What percentage of the amine is protonated...
You are an industrial chemist working for a company that makes methanol (CH3OH) according to the...
You start with a flask at 900 K containing only sulfur trioxide at an unknown pressure...
Ocean water typically contains 35 moles of salt ions dissolved in each 1000 moles of water....
a.)A certain reaction has an activation energy of 25.10 kJ/mol. At what Kelvin temperature will the...
1. What byproduct is synthesized along with aspirin in the reaction performed in this lab?
If insulin were treated with mercaptoethanol to break its disulfide bonds, and then the mercaptoethanol were...
How many phases exist at the end of the reaction from cyclohexene to 1,6-hexanoic acid? Please...
How many milliliters of 0.0160 M Na2S2O3 solution are needed to dissolve 0.510 g of AgBr?...
4-(N-Morpholino) butanesulfonic acid (FW223.29), MOBS, has a pKa value of 7.48. Calculate how many milliliters of...
A 35.7 gram sample of iron (heat capacity 0.45 g/J°C) was heated to 99.10 °C and...
Describe how one could use IR spectroscopy to detect the existence of enolic dimedone.
How many grams of sodium fluoride (NaF) would need to be added to 1.00 L of...
Pchem. Please show work . this is one whole problem 1) An aqueous solution of osmotic...
H NMR spectrum of the product (1,5-diphenyl-1-4-pentadien-3-one). The protons that are alpha to the aromatic ring...
What is the cell potential for the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 47 ∘C when [Fe2+]= 3.10 M...
Explain why you did not obtain a 100 % yield. NOTE: “Human error” cannot be used...
what mass of vermillion can be produced when 45.0ml of 0.0220M of mercury(II) nitrate is mixed...
For the following reaction, Kc = 255 at 1000 K. CO(g)+Cl2(g)⇌COCl2(g) A reaction mixture initially contains...
ΔG˚ = 19.1 kJ Kb for (CH3NH2) at 25˚C is 4.4x10-4 What is the value of...
consider the following reaction between phosphorus and oxygen gas: P4(s) + 5O2(s) ---> P4010 (s) A)...
To gain some appreciation of the biological importance--or lack thereof--of the uncertainty principle, compare the uncertainty...
1. A mass of sodium pentanoate (CH3CH2 CH2 CH2CO2Na · H2O, FW 124.1135) was dissolved in...
Find the pH after 40.00 mL of 0.100 M HCl has been added to 35.00 mL...
What happens to indices of refraction values at Tg?
The label on liquid Gaviscon states that each tablespoon (15mL) contains 95mg of aluminum hydroxide, Al(OH)3,...
A mercury filled discharge tube produces numerous strong spectral bands. The spectrum of the mercury-filled fluorescent...
A salt crystal has a mass of 0.13mg. How many NaCl formula units does it contain?
When oxidizing a secondary alcohol, only one product is formed. What is this product? Why is...
3. An industry emits SO2 at 24 h concentrations of 10, 60, 48, 57 and 11...
When the molar mass of acetic acid is determined in the solvents benzene or carbon tetrachloride...
Is the following reaction spontaneous at 25 °C in the forward or the reverse direction? What...
For the melting of sodium chloride, ΔHfusion = 30.2 kJ/mol and ΔSfusion = 28.1 J/(K⋅mol). A...
Write the redox reaction between Sn2+ and MnO4- in acidic conditions. what is reduced/oxidized?
A student started with 1.622 grams of copper (II) oxide and produced 3.500 g of copper...
3. The electrical conductivity of a compound AX is controlled by the mobility of A+ ions...
the vapor pressure of silver between 1234K and 2485 K is given by the following expression:...
Mercury cells as “button” batteries are very common and consist of HgO, ZnO, and Zn(OH)2 in...
From the information on deltafH and deltafG , provided in the data section calculate the standard...
What volume of 0.100 M HCl is required to titrate 25.0 mL of 0.050 M NaOH?
organic chemistry unsaturation tests We did a lab for functional group analysis and I missed the...
A business manager wants to provide a wider range of p- and n-type semiconductors as a...
1) What is the ph of a 0.005 M , solution of h2so4? ka2=1.2x10^-2 of HSo4-
Ammonia reacts with oxygen to produce nitrogen and water. The balanced chemical equation for the reaction...
1. Imagine you have a saturated solution of Ca(OH)2, at equilibrium, that has some undissolved Ca(OH)2...
Explain what happens, on a molecular or ionic level, to the following when they dissolve in...
1. For the preparation of 2-bromo-4-n-butyl phenol from phenol, the first step is: A. acylation B....
Consider the following reaction: H2(g)+I2(g)⇌2HI(g) A reaction mixture at equilibrium at 175 Kcontains PH2=0.958atm, PI2=0.877atm, and...
Couple questions regarding basic alkene reaction mechanisms. (1) In reactions such as hydroboration, how do reagants...
Enzyme Kinetics Please explain reasoning for answers. How does the [S] affect the rate of an...
A mixture of NaBr, Nal and NaNO3 weights 0.6500 g. By treating it with AgNO3 a...
Sodium and Potassium were determinate in a sample of feldspar of 0.5035 g, first metals were...
consider the following equilibrium at 395K: NH4HS (s) <--> NH3 (g) + H2S (g) the partial...
The initial rate of a reaction depended upon concentration of a substance J as follows: [J0]/(mmol...
Nitrogen trifluoride decomposes to form nitrogen and fluorine gases according to the following equation: 2NF3(g) N2(g) +...
The calamine lotion, which is used to relieve skin irritation, is a mixture of Iron Oxides...
3H2(g)+N2(g)?2NH3(g) How many molecules (not moles) of NH3 are produced from 5.41
Consider the following reaction: H2(g)+I2(g)⇌2HI(g) A reaction mixture in a 3.63 L flask at a certain...
How do you tell equivalence point from a pH graph in titration lab? How to tell...
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: In a chemical reaction 2 mol of substance A react to produce exactly 3 mol...
Using the value of Ksp=6×10−51 for Ag2S, Ka1=9.5×10−8 and Ka2=1×10−19 for H2S, and Kf=1.1×105 for AgCl−2,...
Hydrogen peroxide is a syrupy, viscous water-soluble compound. This is expected based on the structure. The...
The element iodine would be expected to form_____covalent bond(s) in order to obey the octet rule....
Platinum which is widely used in electronics, medicine, and as a catalyst has awork function (the...
1- A gas mixture is made by combining 6.9 g each of Ar, Ne, and an...
What is the pH at the equivalence point of a titration of the weak base NH3(aq)...
1.) An AB4 molecule has two lone pairs of electrons on the A atom (in addition...
Which statement is correct? The reaction that results in an increase in the number of moles...
Methanol (CH3OH) is produced commercially by the catalyzed reaction of carbon monoxide and hydrogen: CO(g)+2H2(g)←−→CH3OH(g). An...
Consider the titration of a 26.9 −mL sample of 0.115 M RbOH with 0.100 M HCl....
Consider the titration of a 26.9 −mL sample of 0.115 M RbOH with 0.100 M HCl....
0.881 Mol sample of helium gas at a temperature of 9.00°C is found to occupy a...
Calculate the pH of a 1 L solution that contains 1.0 M HCl and 1.5 M...
What mass of NaCl will result in the precipitation of PbCl2 from a 1.47 x 10-3...
Estimate the mole ratio of O2 to the saple(benzoic acid, sucrose) and compare the estime with...
Suppose the sample had 1-mol% impurity with a heat of combustion 10% larger than that of...
Not sure if you need more information to answer this please let me know if you...
The dehydrohalogenation of dibromostilbene occurs through two stages. Why does the second stage in particular require...
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