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A test for vitamin C (ascorbic acid, C6H8O6) is based on the reaction of the vitamin with iodine: C6H8O6(aq) + I2(aq) ? C6H6O6(aq) + HI(aq) (a) A 25.0 mL sample of juice requires 11.8 mL of a 0.0164 M I2 solution for reaction. how many moles of ascorbic acid are in the sample? (b) What is the molarity of the acid? (c) If a person wanted to consume the FDA recommended 60 mg of Vitamin C, how many ounces of juice would that person need to consume
26.0cm of a solution containinh 1.86g of X2CO3 in 250 reacted completely with 27.0cm of solution contain 3.65g of HCL per dm,calculate the molar mass of X2CO3 and relative atomic mass of X, and identify X.
Molecular bromine is 24 per cent dissociated at 1600 K and 1.00 bar in the equilibrium Br2(g) to 2Br(g). Calculate K at (a) 1600K, (b) 2000 K, given that standard enthalpy change = +112 kJ mol-1 over the temperature range.
Balance the following skeleton reaction, calculate Ecell, and state whether the reaction is spontaneous:
For complex molecules, such as those found in organic chemistry and those involving proteins, it is often the case that a) possible reactions are dictated by how the molecule was formed
What is the IUPAC name for Hydrogen Chloride. I need to find all of the specificaions, CAS number, ect, and I can not find this compound anywhere in the CRC handbook of chemistry and physics.
Check all of the samples that will have ion dipole forces. You may want to review your notes in chapter 4 to make sure you understand the difference between strong electrolytes and non-electrolytes. HCl (aq) NH4Cl (aq) H2O (l) CO2 (g) KCl (aq) CH3..
If you plot the volume of a sealed gas sample versus its temperature in degrees C, at what T in degrees C will V=0 if you extrapolate the data
The molecular orbital diagram CO in the course notes also applies to the following species
What is the quantity of Fe2O3 that will be produced if 5.00g of FeS2 is reacted with 11.0g of oxygen according to the following reaction
If the standard silver half-reaction potential is set to .80V, calculate the potential for the zinc half-reaction. Write the net ionic equation for the reaction that occurs in this voltaic cell.
The carburizing gas holds the surface composition at 1% carbon for all t > 0. If D=1.4 x 10^-7 cm^2/sec: (a) Calculate the time required at the carburizing temperature
When adjusted for any changes in delta h and delta S with temperature, the standard free energy change delta G at 500K is equal to 9.8x10 4 J/mol.
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