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EDTA is utilized to slow microbial degradation of mayonnaise by preventing bacterial uptake of iron. Assuming that mayonnaise has a pH of 3.9 and a total iron content of 10-6 mole/liter, how much ED
Two hydrogen atoms interact to form a hydrogen molecule. Classify the following statements that describe the stages of bond formation in a hydrogen molecule according to the predominant force existi
What is the enthalpy change for each of the following reactions- 1. Ag+ (aq) + Li(s) -->Ag(s) +Li+(aq) 2. Fe(s) + 2Na+(aq) --> Fe2+(aq) + 2Na(s) 3. 2K(s) + 2H2O(l) --> 2KOH(aq) + H2(g)
Hydrogen exhibits several series of line spectra in different spectral regions. For example the Lyman series (nf = 1 in Balmer-Rydberg equation) occurs in the ultraviolet region while the Balmer (nf
If a buffer solution is 0.230 M in a weak acid (Ka = 3.8 × 10-5) and 0.410 M in its conjugate base, what is the pH
In the fermentation of glucose (wine making ), a volume of 780 ml of CO2 gas was produced 37 degree celsius and 1.00 atm. What is the volume (L) of the gas when measured at 22 degree celsius and 675
Mixtures of ethanal and water do not behave Raoult' s law. Describe the deviation from Raoult' s law in words and with a graph.
A gas sample has a volume of 4250 ml at 15 degree celsius and 749mmHg. What is the new temperature (degree celsius) after the sample is transferred to a new container with a volume of 2.50 L and a p
Describe, using Raoult's law and Dalton's law of partial pressure, why the vapor pressure of a pair of miscible ideal liquids will always be somewhere in between the vapor pressures of the pure liqu
You are titrating 100.0 mL of 0.0200 M Fe3 in 1 M HClO4 with 0.100 M Cu to give Fe2 and Cu2 using Pt and saturated Ag | AgCl electrodes to find the endpoint. (a) Write the balanced titration reactio
A gas sample has a voulume of 4250 ml at 15 degree celcius and 745mmHg. What is the new container with a voulume of 2.50 L and a pressure of 1.20 atm
If 153 mL of wet H2 is collected over water at 24°C and a barometric pressure of 725 torr, how many grams of Zn have been consumed
Rank the relative nucleophilicity of the indicated species in ethanol. CH3OH CH3S- CH3COOH CH3O- CH3COO-
Calculate the equilibrium constant at 40 K for a reaction with ?Ho = 10 kJ and ?So = 100 J/K.
A certain indicator, HA, has a Ka value of 0.000040. The protonated form of the indicator is yellow and the ionized form is red. What is the pKa of the indicator
What is the solubility of M(OH)2 in pure water. B. What is the solubility of M(OH)2 in a .202 M solution of M(NO3)2? Ksp=5.45E-18
The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted. If 0.560 moles of
A container of gas with an adjustable volume has an initial pressure of p. The container volume is tripled at constant temperature. What is the pressure inside the container after the volume is incr
Suppose that 2.0mol H2 at 2.0atm and 25C and 4.0mol N2 at 3.0atm and 25C are mixed at constant volume. Calculate delta mix G. Also, what would be the value of delta mix G had the pressures been iden
What three events occur during the light reactions of photosynthesis. A. Reduction of oxygen, oxidation of NADPH, formation of ATP B. Oxidation of water, reduction of NADP+
In the intermembrane space, attached to the inner mitochondrial membrane. C. In the intermembrane space, attached to the outer mitochondrial membrane D. On the cytosolic side of the outer mitochond
A mitochondrion is producing ATP at a constant rate and, then, a chemical uncoupler is added. Compared to before the uncoupler was added
Given 217 mL of a buffer solution that is 0.46 M formic acid and 0.27 M sodium formate, calculate the pH of this solution after the addition of 2.8 mL of 6.3 M hydrochloric acid. The Ka of formic ac
What is the path these electrons use in the Electron Transport Chain? Answer A. Complex I, Complex II, Complex III, Complex IV, O2 to H2O B. Complex II, Complex III, Complex IV, O2to H2O C.
Calculate the pH of a solution made by dissolving 2.89 g of sodium fluoride and 17.1 mL of 0.309 M hydrofluoric acid in enough water to make 177 mL of solution.