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Determine the concentrations of BaBr2, Ba2 , and Br– in a solution prepared by dissolving 2.51...
For ethane, C2H6, the van der Waals constants are a = 5.435x10−1 Pa.m6/mol−2 and b =...
Explain why heating a solid can eventually melt the solid and heating a liquid can eventually...
Why is it important not to stir the solution in a cyclic voltammetry experiment?
Using the following thermochemical data, calculate Hf° of Ti2O3(s). 2TiCl3(s) + 3H2O(l) Ti2O3(s) + 6HCl(g)...
what are the 12 principles of green chemistry
1. Which one has the lowest boiling point and which one has the highest boiling point....
a. What is the theoretical pH at the stoichiometric equivalence point for the titration of the...
A buffer is prepared by adding 42.1 mL of 2.4 M NaF to 30.3 mL of...
From the values of ?H and ?S, predict which of the following reactions would be spontaneous...
When 22.53 mL of aqueous NaOH were added to 1.310 g of 3-(cyclohexylamino)propanesulfonic acid (FM 221.32,...
Determine whether or not each set of quantum numbers shown could correctly describe an electron in...
The distribution coefficient between methylene chloride and water for solute Y is 6. An amount of...
A 2.15 kg aluminum engine block heats up to 125 C. Engine coolant at 25 C...
3-Fluorophenol has a pKa of 8.40. 4-Nitrophenol has a pKa of 7.16. 3-Chlorobenzoic acid has a...
Determine whether each of the following compounds is soluble or insoluble ? HgI2, CaCO3, AlPO4, K3PO4
For a molecule with three atoms it is predicted that there will be three IR-active vibrational...
How do I synthesis this molecule starting with an alkane while not using cleavage mechanisms? 2R,...
Pb(NO3)2 and KI If the PbI2 reaction was performed with .50 grams of Pb(NO3)2 and .70...
If a sample of tap water contains 400 ppm of Ca2+ and 80 ppm of Mg2+,...
1. 7.00×10−3 mol of HBr are dissolved in water to make 19.0 L of solution. What...
The second-order rate constant of oxygen uptake by hemoglobin (Hb) to form oxyhemoglobin (HbO2) is 2.1...
I know that 1:4 acetate; hexane eluting solvent is nonpolar. So what about the 1:2 acetate;...
The boiling point of diethyl ether CH3CH2OCH2CH3 is 34.50°C at 1 atmosphere. A nonvolatile, nonelectrolyte that...
Explain the process of recrystallization (i.e., how does it purify solids?) Please be as descriptive as...
Grignard Reaction: 1. it is perfectly acceptable to use wet diethyl ether during the isolation of...
a refrence book lists the following overall formation constants for the combination of bromide with pb2+...
1. The purpose and conclusion for the Flame Test Lab.
Consider the conductances of the following 0.025 M solutions. How many strong electrolytes (SE), weak electrolytes...
8.3. The pH value of pure water is not a universal constant, but dependent on temperature....
Chemistry by Tro 3rd Edition, For More Practice 3.19 This is a question from the 3rd...
For the following fusion reaction, calculate the change in energy of the reaction in units of...
>> Thermodynamics << QUESTION )) Quantitatively explain why ice skates slide on ice for a 80...
Rank the compounds in order of increasing vapor pressure at 298 degrees celcius: Cyclopropane, Cyclobutane, and...
Label all the characteristics that apply from the following list: chiral, achiral, entiomers, diastereomer, meso. Label...
In photosynthesis, plants form glucose (C6H12O6)and oxygen from carbon dioxide and water. Calculate ΔH∘rxn at 25...
The value of Kp for the reaction below is 8.00 x 10^-6. CH3OH(g) <----> 2 H2(g)...
for a continuous and aligned Kevlar-29 fiber-reinforced composite, the modulus elasticity in the longitudinal direction is...
15O2(g) + 2C6H5COOH(aq) → 14CO2(g) + 6H2O(g) If 45.0 moles of O2(g) and 10.6 moles of...
Determine the OH- conc of a solution that is 0.180 M in F-
Suppose in the reaction preparation of Diphenylacetylene you start with cis-stilbene instead of trans-stilbene, would you...
The conditional formation constant for the calcium -EDTA complex at pH 10 is 1.80x10^10. Consider the...
Consider this overall reaction, which is experimentally observed to be second order in AB and zero...
Calculate the polarity of the following solutions. 1. 0.600 mole glucose in 0.100 L of a...
Consider the 1040 carbon steel listed in Table 6.1. (a) A 20-mm-diameter bar of this alloy...
A person inhales air richer in O2 and exhales air richer in CO2 and water vapor....
You need to analyze two samples: a) from gas station tank (gas quality test) b)crop extract...
HNO2 ( Ka=4.5 x 10^-4) HCN (Ka= 4.9 x 10^-10) CH3NH2 (Kb=4.4 x 10^-4) HONH2 (Kb=1.1...
A syringe initially holds a sample of gas with a volume of 285 mL at 355...
Explain why in light of kinetic molecular theory. Select all that apply. Gases behave ideally when...
The density of solid Fe is 7.87 g/cm3. How many atoms are present per cubic centimeter...
The pKa of hypochlorous acid is 7.530. A 59.0 mL solution of 0.137 M sodium hypochlorite...
When a hydrophobic substance like a carbon is dissolved in water, a cage of ordered water...
balance half rxns: PbO2 (s) = Pb2+ E=+1.455 V; Cr2O72- = Cr3+ E=+1.33
You wish to prepare 100 mL of 0.750 M HCl from concentrated HCl (11.65 M). You...
Please thoroughly explain the source of the oxygen atoms in the Chapman cycle.
The element copper has two naturally occurring isotopees. One of these has a mass of 62.93...
Match each compound to its role in this SN1 reaction. hydrochloric acid Answer 1Choose...drying agentinorganic productbase...
Kenny needs to make a 2 L of 10 mM Tris Buffer pH 8.3. He has...
Given the two reactions H2S?HS?+H+, K1 = 9.15
25 mL of Water were added to 15 mL of the solution that was formed from...
Consider four possible liquid fuels used in vehicles. • C8H18 Octane - gasoline • C12H26 Dodecane...
1. Calculate the mass (in g) of solid NaCH3CO2*3H2O needed to make 150 mL of buffer...
Consider the following reaction. A(aq) <---> 2B(aq) Kc=4.26E-6 at 500 K. If a 2.30 sample of...
A solution was prepared by mixing 10.00 mL of unknown (X) with 5.00 mL of standard...
If 14.5 g of sulfuric acid in "f" reaction above reacts with excess boron hydroxide, how...
What general effects would you expect the following changes to have on the rate of an...
1) You need an acid that will spontaneously oxidize Sn, but NOT spontaneously oxidize Ag. How...
1. Rank the following alcohols in order of ease of dehydration and explain your reason(s) for...
why do you add saturated sodium bicarbonate to your crude aspirin? why do you later add...
Write a molecular equation for the precipitation reaction that occurs (if any) when the following solutions...
The solubility of NaNO3 is 143 g per 100 g of water at 75 °C and...
In lab we performed a dehyrdation of methylcyclohexanol to methylcyclohexene using a phosphoric acid catalyst through...
What impurity(ies) do you think you get rid of in the recrystallization of the product obtained...
8H+(aq) + 5Fe2+(aq) + MnO4 -->5Fe3+(aq) + Mn2+(aq) + 4H2O(l) If 1.25 g of Na2C2O4 was...
In recrystallization, why is it necessary to allow enough time for your samples to dry?
The specific heat of water is greater than the specific heat of ethanol. What sample will...
Why are the physiological buffer systems more powerful in affecting pH?
what is the molarity of the acetic acid solution if 29.7 mL of a 0.205 M...
a. Does ∆H°reaction or ∆H is calculated according to the coefficient right before each molecule, then...
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