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Ascorbic acid (vitamin C, C6H8O6)is a water-soluble vitamin. A solution containing 81.0g of ascorbicacid dissolved in 230g of water has a density of 1.22g/mL at55oC. What is the mass percentage, the mole fraction,molality, and molarity in this solution?
System were found to be [N2]=[O2]=0.200 M and [NO]=0.500 M. N2(g) + O2(g) 2NO(g) If more NO is added, bringing its concentration to [0.800 M], what will the final concentration of NO be after equilibrium is re-established?
A sample containing 4.80 g O2 of gas has a volume of 15.0 L. Pressure and temperature remain constant. What is the new voume if 0.500 mole O2 gas is added.
Working with partition function and entropy what is the ratio of the number of particles in the J= 14 to the J=4 level at a temperature of 1900 K?
At this temperature iron is in the BCC form and will dissolve (interstitial) carbon up to about 0.001 wt%. If the criterion is that the carbon concentration equals 0.0002 wt% carbon at a depth of 100 microns, how long must the exposure be
What is the pH of a buffer prepared by adding 0.809mol of the weak acid HA to 0.305mol of NaA in 2.00L of solution
A solution contains 0.750 M HA (Ka = 1.0 x 10-6) and 0.250 M NaA. What is the pH after 0.100 mole of HCl is added to 1.00 L of this solution
A reaction mixture for an enzyme assay has a final volume of .210 ml iin the buffer .030 Mtris hydroxymethaneaminomehtanne, 4.0 mM ethylenediameinetretraacetic acid, .4 mM beta mercaptoethanol
HCL and heat to do the normal lab, if the solubities of reactant and product were reversed thou , how would the isomerization be followed. How would one knows when it is complete
Determine the [OH-] of a solution that is 0.230 M in HCO3-. Also determine the pH of this solution.
If 1.02 g KHP (molar mass = 204.2 g/mol) is titrated with 28.34 mL of NaOH, what is the concentration of NaOH?
A certain acid HX is dissolved in water to make a 0.10M solution. At equilibrium, the concentration of X^- ions is 1.0 x 10^-5 M. The Pka of HX is approximately?
Write balanced ionic equation, net ionic equation, oxidation half reaction and reduction half reaction when liquid sodium chloride is electrolyzed.
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