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A 181 mg sample of a nonelectrolyte isolated from throat lozenges was dissolved in enough water to make 10.0 mL of solution at 25 °C. The osmotic pressure of the resulting solution was 4.86 atm. Calculate the molar mass of the compound.
The concentration of Mg2+ in seawater is 0.052 M. What is the pH when 95% of the magnesium ions will be precipitated as the hydroxide salt. (Ksp, Mg(OH)2 is 8.9 x 10-12).
question carbon dioxide is dissolved in an aqueous solution at 303 k at a concentration of 0.90 x 10-4 kgkg. henrys law
Choose a more convenient order. (b) Calculate q, w, deltaU, deltaH, and deltaS when the gas changes between the same two conditions
A solution is initially 0.100 M in HOCl and 0.300 M in NaOCl. What is the pH if 0.030 mol of solid NaOH is added to 1.00 L of this solution
Proteins are sometimes embedded in the lipid membranes of cells. Many such proteins serve as channels to allow various things to flow in and out of the cells. The interiors of lipid membranes are very hydrophobic.
Problem- For the reaction shown below, which change in conditions made to the system at equilibrium will result in a net reaction to the right to form more product?
With water as a solvent, determine the molality of the solution required to produce a change of temperature equal to 2 ºC
how far away from equilibrium is the concentration of ADP and ATP in the cell? Answer A. equal B. slightly different C. greater than two orders of magnitude different D. greater than 6 orders of magnitude different E. greater than 12 orders of mag..
Half-life equation for first-order reactions: (the 1/2 in t1/2 is a subscript) t1/2=0.693/k where t1/2 is the half-life in seconds (s) , and k is the rate constant in inverse seconds (s^-1).
Based on the stoichiometry, at what point does the limiting reactant change? show calculations to support your answer. The volume of acid HCL (10mL) is constant and mass of metal Mg (0.250g) is constant.
Determine freezing point of solution which contains .31 mol of sucrose in 175g H2O. kf=1.86 degreesC/m
Decide whether or not a reaction will occur when a solution of Cadmium(II) Chloride is treated with nitric acid HNO3(aq). Write a balanced equation for any reaction that occurs.
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