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1) A solution is 9.60%(w/w) and contains 25.0 gm of salt. How much water is in the solution, and what would be a reasonable estimate of volume of solution?
2) What would be the concentration(%wt/wt) of 6.75 of salt added to 35.5g of water
3) How much water would be in a solution of 75.0g NaCl with a concentration of NaCl with a concentration of 3.2m? (atomic weight Na=23gm, Cl=35.5 gm)
4) how many mols of nitric acid would be in 1450ml of an acid solution with a density of 1.42 and assay of 70%(wt/wt)
caculate the amount of heat liberated ( in kj) from 335g of mercury when it cools from 59.0 to 12.0 c
Compare the proposed reaction mechanism for the sodiumhypochlorite oxidation of cyclohexanol with that involved in thechromic acid oxidation. Do you notice any similarities?
How do you write orbital diagrams in an a (arrow diagrams) for the following elements: 26Fe, 34Se, 36Kr I d
Calculate the activities and the activity coefficients for a chloroform-acetone solution in which Xa=0.6. the vapour pressure of pure chloroform at 50c is Pc* = 98.6 kpa and the vapor pressure for chloroform above the solution is Pc=53.3 kpa
Calculate the volume of 1 M solution of NaOH required to neutralize 20mL of 0.1 M acetic acid solution (final pH should ;be 7.0). (pKa of Acetic acid = 4.76).
How many grams of O2 are needed to react with 20.9 grams of Mg?
why is the vertical movement of air critical to the formation of clouds and precipitation? how is this vertical
Water solubilities of oxalic acid and sodium oxalate at RT are 10g/100 ml and 3.7 g/100 ml respectively. Could you prepare oxalic acid by adding HCl to a solution of sodium oxalate, cooling it to room temperature, and filtering the resulting mixtu..
hydrochloric acid to form benzoic acid, if 1.47 g of benzoic acid were formed, how many mmol of sodium benzoate would have been used?
The mass of the final solution is 73.0 grams, and its heat capacity is 3.85 J/g°C; the heat capacity of the calorimeter is 5.0 J/°C. Calculate the ?Hreaction in kJ/mol metal.
Calculate the mass of the solvent (CCl4) in kg. Use the molality calculated in question 2 and the solvent mass calculated in question 3 to determine the number of moles of solute present in this solution.
Which substance would provide the best protection for an iron pipe buried in the ground? for a lead pipe. Ag, Au, Cu, Mg, and Zn
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