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Question- In an experiment on identifying cations using paper chromatography, the cation that most strongly absorbs on the stationary phase
a) Shows a color spot near the top of the chromatography paper after completion of the rise of the solution through the capillary action.
b) Shows a color spot near the bottom of the starting position of the cations after completion of the rise of the solution through the capillary action
c) Moves the most rapidly in the rising column of solution on the chromatography paper though capillary action
d) Shows the smallest oval color spot after the spraying the paper with eth appropriate indicator
Show all steps to describe the solution of above problems
Combustion of a .2000g sample of vitamin C sample produced .2998 g of carbon dioxide and .0819 g of water. If this compound is composed of C, H, and O, then what is its empirical formula?
Suppose you are given a cuvette containing a Cu(NO3)2 souliton of unkown concentration and you are asked to analyze it. You known that the unknown solution has a concentration between 0.14 M and 0.19 M. How would you analyze this unknown solution
What salt is formed in the reaction between 0.13 mol H3PO 4 and 0.26 mol KOH? 2.51 moles of a gas occupies 50.88 liters, and its density is 1.43 g/L at a particular temperature and pressure. Calculate the molar mass of the gas.
If the experimental value of Kc is 6.3 for this reaction at this temperature, calculate the equilibrium concentration of each reagent.
Provide a stepwise mechanism for the reaction, showing all electron movement using the curved arrow convention. Sketch a qualitative energy level diagram for the mechanism labeling all relevant points.
Phenol is a weak organic acid with Ka=1.0x10^-10. How many grams of phenol do you need to add to 500. mL of water to make a pH=5.75 solution
To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 12.9 g, and its initial temperature is -13.9 °C. The water resulting from the melted ice reaches the temperature of your skin,
Explain a girl is celebrating her seventh birthday. Each guest is served one large slice of chocolate cake, a hamburger, French fries and some oranges.
How would you determine whether you have really neutralized the solution after the addition of NaOH
Fe(s) + 2HCL(aq)goes to FeCl2(aq) + H2(g) Change in enthalpy is -87.9kJ. How much heat is liberated at constant pressure if .368 g of iron reacts with 18.8mL of 0.568 M HCl?
Dry Sand has a density of 1.5g cm^-3. A child's sandbox measuring 4 ft by 5 ft is filled with sand to a depth of 6 in. What is the mass of the sand in kg. in lb
a sodium hydroxide solution is standardized using 0.502g of solid oxalic acid h2c2o4. find the molarity of the base if
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