| Question | Subject | Tutorials |
|---|---|---|
| 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 … |
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| 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 … |
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| 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 … |
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| Explain the stereochemistry of the product Sodium cyanide reacts with 2-bromobutane in dimethylsulfoxide to form a substitution product. Identify the configuration of the 2-bromobutane structure shown below. Then draw the substitution product … |
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| What is the total potential Consider two cells, the first with Al and Ag electrodes, and the second with Zn and Ni electrodes, each in appropriate 1.00 M solutions of their ions. a) If connected as voltaic cells in series, which … |
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| Explain the solution reaches equilibrium A solution is made that is 1.1×10^?3 M in Zn(NO3)2 and 0.150 M in NH3. After the solution reaches equilibrium, what concentration of Zn2+(aq) remains
… |
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| Calculate the molar entropy of evaporation of ccl3f
Trichlorofluoromethane (CCl3F) boils at 23.8C, and its molar heat of vaporization is 24.8 kJ/mol. Calculate the molar entropy of evaporation of CCl3F(l).
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| Depic resonance structures for 9-hydroxymethyl anthracene Draw the resonance structures for 9-(hydroxymethyl)anthracene. Is it possible for all three rings to simultaneously have benzenoid character?
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| What advantage does using the wiley extractor what advantage does using the Wiley extractor have over simply pouring acetone over the meat again and again?
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| Write the ground-state electron configuration
Problem- Identify the neutral element represented by this excited-state electron configuration, then write the ground-state electron configuration for that element.
Excited state Element … |
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| What is the density of li2s in grams
The crystal structure of lithium sulfide Li2S is pictured here. The edge length of the unit cell is 5.88*10^2pm. What is the density of Li2S in grams per cubic centimeter?
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| Explain what is the chemical formula a non-cyclic alkane
If a non-cyclic alkane shows a molecular ion peak at m/z 2.40 × 102, what is the chemical formula?
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| Depict the structure of 2,4-diethyl-4-ethoxyhexane
Depict the structure of 2, 4-diethyl-4-ethoxyhexane, explain which he cannot find in a chemical reference manual. Depict the structure of 2,4-diethyl-4-ethoxyhexane.
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| The intramolecular aldol condensation of 3-methylhexanedial What enone product would you expect to obtain from intramolecular aldol condensation of 3-methylhexanedial
… |
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