| Question | Subject | Tutorials |
|---|---|---|
| Explain why is it quantitatively not acceptable to titrate
Why is it quantitatively not acceptable to titrate each vinegar samples with NaOH titrant to the same dark pink endpoint?
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Chemistry / Biochemistry | Get it Now |
| Explain size of an axial substituent always result in higher
Does increasing the size of an axial substituent always result in higher relative strain energies for the axial conformation
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Chemistry / Biochemistry | Get it Now |
| Explain the pkb values for the dibasic base
The pKb values for the dibasic base B are pKb1 = 2.1 and pKb2 = 7.8. Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.75 M B(aq) with 0.75 M HCl(aq).
(b … |
Chemistry / Biochemistry | Get it Now |
| Which is the most acceptable electron dot structure 1. Which is the most acceptable electron dot structure for N2H2?
2. How many lone pairs of electrons are on the Xe atom in XeF6?
a. 1
b. 2
c. 0
d. 3
3. Which element, indicated b … |
Chemistry / General Chemistry | Get it Now |
| Explain a reagent bottle on the shelf labeled A reagent bottle on the shelf labeled 0.5 M NaCl was used in place of the 0.5 M CaCl2. Assuming C2O42- to be in excess, what would be observed as a result of using this reagent in this test
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| Explain the lewis structure for -ch2cn The lewis structure for -CH2CN (that should be a superscripted negative sign to the left of the 1st C)
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| Original concentration How many half lives will it take the c4h6 to decrease to 3.1% of its original concentration? the relationship of At/ A0= 0.50
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| State the organic product of the reaction Draw the organic product of the following reaction between (1S,3S)-1-chloro-3-methylcyclopentane and methanethiol in the presence of sodium hydroxide. Include stereochemistry
Select all that apply: … |
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| Watt light bulb consumes A typical 100-watt light bulb consumes 100 J of energy per second. If a light bulb converts all of this energy to 400 nm light, how many photons are produced each second?
A) 5.0x10-28
B) 5.0x10- … |
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| Compute maximum mass of s8 produced by combining reactant What is the maximum mass of S8 that can be produced by combining 80.0g of each reactant? 8SO2+16H2S -> 3S8 + 16H2O
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| What is the ph of the benzoic acid solution prior to adding prepare a pH=4.00 buffer starting from 1.50 L of 0.0200 M solution of benzoic acid (C6H5COOH) and an excess of sodium benzoate (C6H5COONa). 1. What is the pH of the benzoic acid solution prior to addi … |
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| State keq to calculate the scn- concentration Use the mean value that you determined for Keq to calculate the SCN- concentration in a solution Fe3+ concentration was 4.00 X10-2M and initial SCN- concentration was 1.00 X10-3 M. Is all of theSCN- i … |
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| Explain the molarity of the malonic acid solution A solution of malonic acid, H2C3H2)4, was standardized by titration with 0.1000 M NaOH solution. If 24.91 mL of the NaOH solution were required to neutralize completely 15.78 mL of the malonic acid so … |
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| Standard enthalpy of formation of isomer For a particular isomer of C8H18, the following reaction produces 5104.1 kj of heat per mole of C8H18(g) consumed, under standard conditions
C8H18(g) + 25/2O2(g) --->8CO2(g) + 9H2O(g)
deltaHr … |
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| Find out the molar concentration of the weak acid solution A 23.74mL volume of 0.0981 M NaOH was used to titrate 25.0mL of a weak monoprotic acid solution to the stoichiometric point. Determine the molar concentration of the weak acid solution.
… |
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| The charges and sizes of the ions in an ionic compound Problem- The charges and sizes of the ions in an ionic compound affect the strength of the electrostatic attraction holding that compound together. Based on ion charges and relative ion sizes, rank th … |
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| Biphenyl c12h10 is a nonvolatile nonionizing solute
Biphenyl C12H10 is a nonvolatile nonionizing solute that is soluble in benzene C6H6. At 25 °C the vapor pressure of pure benzene is 100.84 torr. Explain what is the vapor pressure of a s … |
Chemistry / Biochemistry | Get it Now |
| Calculate the ph of each of the following strong acid The answer to Acid-Base Equilibria
Hey there. I am having trouble with this question.
Calculate the pH of each of the following strong acid solutions:
a) 0.00135 M (mol/L) HNO3
b) 0.425 g of H … |
Chemistry / General Chemistry | Get it Now |
| Determine the value of k the thermodynamic equilibrium The following equation represents the decomposition of a generic diatomic element in its standard state.
1/2 X2(g) ---> X(g)
Assume that the standard molar Gibbs energy of formation of X(g) i … |
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| Explain what was the ka value calculated by the student
Part A Aspirin (acetylsalicylic acid,C9H8O4 ) is a weak monoprotic acid. To determine its acid-dissociation constant, a student dissolved 2.00 g of aspirin in 0.600L of water and measured th … |
Chemistry / Biochemistry | Get it Now |
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