what is the theoretical yield for the reaction between 1-hexene and Hbr? .5mL of 1-hexene used, and 5mL of 1.8M HBr.
What is the theoretical yield for the reaction between 3,3-dimethyl-1-butene and HBr? .5mL of 3,3-dimethyl1-butene used, and 5mL of 1.8M HBr.
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How many grams of each product result from the following reactions, AND how many grams of each reactant is left over? (Shntould be three amounts left over for each equation)
1) ( 1.3 g NaCl)+( 3.2 g AgNO3)→(xgAgCl)+(ygNaNO3)
2) ( 2.63 g BaCl2)+( 6.76 g H2SO4)→(xgBaSO4)+(ygH
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In the blood plasma, pH is maintained by the carbonic acid-bicarbonate buffer system. Explain how pH is maintained when (a) acid is added to the buffer system, (b) base is added to the buffer system?
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1.) Electron Spin Quantum Number
What values can this number have? What information does it provide? (Be complete in your answer.)
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if the liquid did not completely vaporize in the experiment would the apparent molecular weight by larger, smaller or unchanged compared to that determined if the experiment had been properly performed?
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For carbon-14, calculate the mass defect and the binding energy. Please explain to me where you get the numbers from.
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The hydroxide ion has the formula OH?. The solubility-product constants for three generic hydroxides are given here.
| Generic hydroxide | Ksp |
| XOH | 1.60 |
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What is the purpose of the experiements determining the dissociation constant of a weak acid using ph measurement and monitoring acid-base titrations with a ph meter? We combined both experiements together into one, just not understand the purpose of the experiment.
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Broadband-decoupled CNMR spectra for three compounds with the molecular formula C3H8O are shown in Figure 23.15 (Mohrig 4th ed). Deduce the structure of each compound, estimate the chemical shift of each of its carbon atoms using the additive parameters in Table 23.3 and 23.4, and assin the NMR signals to their respective carbon atoms. The measured chemical shifts of the carbon atoms follow. (a) 10.2, 25.8,64.4 ppm, (b) 25.3, 64.2 ppm, (c) 15.0, 58.2, and 67.9 ppm
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What is the pH at the equivalence point of the titration of 0.150 L of 0.500 M formic acid with 30.0 mL of 2.50 M sodium hydroxide. Ka = 1.8 X10^-4
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Consider the following reaction :
Fe3+ (aq) + SCN- (aq) ---> Fe(SCN)2+ (aq)
Starting with 4.00 mL of .200 M Fe3+ (aq) in a cuvette, 0.10 mL increments of 0.00100 M SCN- (aq) will be added. Assume that because [Fe3+ (aq)] >> [SCN- (aq)], the [Fe(SCN)2+] concentration can be calculated from the limiting reagent, SCN-. Calculate [Fe(SCN)2+].
| Volume .00100 M KSCN mL | [Fe(SCN)2+] (M) |
| .10 | |
| .20 | |
| .30 | |
| .40 | |
| .50 | |
| .60 | |
| .70 | |
| .80 | |
| .90 | |
| 1.00 |
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11-Which of the following does NOT regulate biochemical reactions?
A. Regulation of enzyme amounts.
B. Regulation of access of substrates to certain compartments.
C. Alteration of Go' by raising or lowering reactant concentrations
. D. Regulation of the catalytic activities of enzymes.
E. Alteration of the amounts of allosteric modifiers (regulator molecules).
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Which of the following experimental methods cannot be used to measure the rate of a reaction?
a. measurement of the change in the partial pressure of a gas-phase reactant over time
b. measurement of the equilibrium concentration of an acidic product via titration with a strong base
c. measurement of the absorbance of a colored reactant with time
d. measurement of the absorbance of a colored product with time
e. measurement of the change in the partial pressure of a gas-phase product over time
f. none of the above can be used to measure the rate of the reaction
g. I don't know
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