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1.Write a procedure for how you would determine the density of your Gak. Write your procedure...
how to determine concentration of iron by EDTA titration
TWO MOLECULES OF BUTADINEC4H6 CAN JOIN TO FORM C8H12. C4H6----1/2C8H12 THE FOLLOWING CONCENTRATION VERSUS TIME DATA...
Use the following information to answer the next five questions. The following buffer was prepared: 50....
What is the example of chemical system and the example should not be from biochemistry? I...
For each salt, determine how much will remain undissolved if 500 g is mixed into a...
CHEM ENGINEERING QUESTION How much energy must be added to convert liquid n-pentane at 20 C...
The atomic line spectrum of hydrogen contains a line in the near-UV spectrum that corresponds to...
CHEM ENGINEERING QUESTION 20.0 mol CO2, 13.3 mol CO, and 16.7 mol H2O comprise a stack...
A) HClO is a weak acid (Ka = 4.0 × 10–8) and so the salt NaClO...
Rank the following salts in order of increasing molar solubility BaSO4 = 1.1 x 10-10 AgCl...
A 2.25g sample of impure oxalate requires 30.5 ml of .0210 M KMnO4 for oxidation in...
an oven cleaning solution is 45.0% Ba(OH)2. ID one.jar of this product contains 475g of solution...
an oven cleaning solution is 45.0% Ba(OH)2. ID one.jar of this product contains 475g of solution...
The first four energy level in arbitrary units of energy of an unknown element are listed...
why in aluminium an amphoteric substances. why adding excess reagent causes some precipitates to dissolve -...
An unknown compound contains only C, H, and O. Combustion of 6.80 g of this compound...
1. Prepare your first buffer by mixing 50.0 mL of 0.100 M NaOAc and 45.0 mL...
A 1.00 mol sample of hydrogen iodide vapor is placed in a 1.00 L vessel at...
Use the bond energies provided to estimate deltaH rxn for the reaction below. 2 Br2(l) +...
Calculate ΔmixS, ΔmixH, and ΔmixG for mixing two liquids, A and B in equal amounts at...
Using the Rydberg formula, calculate the initial energy level when an electron in a hydrogen atom...
a. Describe the preparation of 2 liters of 0.1 M Glutamate buffer, pH 10.0. You have...
Hypochlorous acid, HClO, has a pKa of 7.54. What are [H3O+], pH, [ClO-], and [HClO] in...
8.10 kj of heat energy is added to 15.0 g of ice at -25.0c describe the...
If 0.00300 mol NaOH and 0.00300 mol Ba(OH)2 are completely dissolved in water to make1.00 L...
A cell composed of a platinum indicator electrode and a silver-silver chloride reference electrode in a...
chapter 9 pre lecture predict whether each of the following compounds are nonelectrolyte,weak electrolyte, or strong...
Use the standard reduction potentials located in the 'Tables' linked above to calculate the equilibrium constant...
a.You add 400 μL of ADH instead of 100 μL in ethanol and NAD+ mixture. The...
Explain why the preparation of Nylon- 6,10 occurs under milder conditions when decanedioyl dichloride is used...
Concentration of acetic acid: 1.041M and concentration of sodium acetate is 1.071M. The buffer is created...
The combustion of C2H4O(g) has a ΔHrxn value of –2308.8 kJ. What is the enthalpy change...
Will the calculated molarity of the NaOH solution be too high or too low if a...
The following information is given. Concentration of acetic acid = 1.041M Concentration of sodium acetate =...
Determine the number of moles of each unknown & calculate each of their masses in g/mol....
What is the net ionic equation for the reaction of sodium carbonate with zinc nitrate? I...
Can you draw the mechanism for the synthesis of spingomyelin and include reactants, products and electron...
In chemistry I'm having problems solving equilibrium problems because I don't know how to rearrange the...
Acetylene anion can react with butan-2-one to give a tertiary alcohol 3-methylpent-1-yn-3-ol upon neutralization. Using molecular...
Use Hess's Law to calculate the enthalpy change for recovering tungsten from its oxide using the...
For a particular redox reaction NO2– is oxidized to NO3– and Cu2 is reduced to Cu...
Determine whether the metal in the ionic compounds Cr2O3, NaI, CaBr2 and SnO form only one...
A freshly isolated sample of 90Y was found to have an activity of 1.0 × 105...
Chlorine dioxide reacts in basic water to form chlorite and chlorate according to the following chemical...
A system initially has an internal energy E of 501 J. It undergoes a process during...
The equilibrium constant of a system, K, can be related to the standard free energy change,...
Column chromotography lab question? Once the chromatographic column has been prepared, why is it important to...
Explain why “weapons-grade” Uranium would not likely contain very much Uranium-238. Use the “Nuclear Reactor” tab...
What is the Ecell at 298K of the spontaneous cell made from Ag+/Ag (0.8V) and Cl2/Cl-(1.36V)...
Part A At a pH of 7.40, what is the ratio of the molar concentrations of...
1. A student extended the study of the cobalt ion equilibrium in Part V. When silver...
What structural features and what overall properties are important in a good detergent?
1.If the rate law for the clock reaction is: Rate = k [ I-] [ BrO3...
Phosphoric acid, H3PO4(aq), is a triprotic acid, meaning that one molecule of the acid has three...
A beaker with 175 mL of an acetic acid buffer with a pH of 5.000 is...
The rate constant for the first-order decomposition of a compound A in the reaction 2 A...
The rate constant for the first-order decomposition of N2O5 by the reaction 2 N2O5 (g) ...
Balance these equations for redox reactions occurring in acidic solution. VO43−+Fe2+→VO2++Fe3+ Balance these equations for redox...
Given the following reactions: Question (1) Calculate for the change in enthalpy of the reaction of...
A slightly bruised apple will rot extensively in 3.0 days at room temperature (26.0 degree C)....
At a certain temperature, the equilibrium constant, Kc, for this reaction is 53.3. H,2(g) + I,2(g)...
Write out the mechanisms (reactant, product structures and electron movement) for each synthetic step to the...
3)The following reaction, calculate ΔH∘rxn(in kJ), ΔS∘rxn(in J/K), and ΔG∘rxn(in kJ) at 25 ∘C. NH4Cl(s)→HCl(g)+NH3(g) 4)...
Ammonium nitrate decomposes explosively upon heating according to the following balanced equation: 2NH4NO3(s)→2N2(g)+O2(g)+4H2O(g) a.) Calculate the...
A potential side product in the synthesis of dibenzalacetone forms when acetone forms with itself. a)...
The salt bridge is to prevent wholesale mixing of the two solutions. assume the bridge is...
You have a certain mass of helium gas (He) in a rigid steel container. You add...
Select all of the correct statements about the relative acid strengths of pairs of acids from...
Calculate the pH of each of the following strong acid solutions. (a) 0.00809 M HBr pH...
Calculate the theoretical yield for the bromination of trans-stilbene. Compounds used: 0.002 moles of trans-stilbene 10mL...
The reaction of 9.0 g of 1-butanol (MW = 76g/mol) with 13.0 g of sodium bromide...
why is the extraction method used in organic chemistry lab?
Why is the washing method used in organic chemistry?
1) Calculate the change in pH when 3.00 mL of 0.100 M HCl(aq) is added to...
A student makes a solution for analysis by mixing 5.97 grams of Cu2SO4 into 377.3 grams...
In the synthesis of tris(ethylenediamine)nickel (II) chloride dihydrate lab, Give me a good paragraph about this...
A 50 μM solution of chromophore A had an absorbance of 0.861 at 405 nm and...
will the soliutions of these salts be acidic, basic or neutral? 1)FeCl 2)CaBr2 3)NaF
Find the pH of each of the following solutions of mixtures of acids. 4.5×10−2 M in...
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