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A student immersed a 8.27g of unknown metal sample in a graduated cylinder containing 1ml of water. She noted the water level to rise to 23.4ml. from these data find the volume of the unknown metal
The handling of sodium bicarbonate is difficult due to the release of co2 during the adjustment of the pH, why can't other bases known be be easy to handle such as sodium hydroxide be used
When 9 mL of a solution containing 2.5 M AlBr3 is diluted to 33 mL, a dilute solution is formed. What is the Br- concentration in 20 mL of the dilute solution.
what is the lewis structure and molecular geometry of pernitrate and carbonate ion?
Why do you think the enthalpy of activation, (REFER TO THE PICTURE), for a syn-periplanar elimination is higher than that for an anti-periplanar elimination
If the sign for delta G is negative (spontaneous process) and the sign for delta S is positive (more disorder) for both dissolving processes, how could one be endothermic (positive delta H) and one be exothermic
Which of the following compounds will produce an acidic solution when dissolved in water? What is the OH- (hydroxide ion) concentration in a solution with pOH = 2.45.
calculate the theoretical yield of TiO2. If the percent yield of the reaction is 77.6%, how many grams of TiO 2 are actually formed?
What determines whether a group on a benzene ring will be activating or deactivating and ortho para
a 0.50 moll solution of codeine has a poh of 3.05. what is the kb value of
Which of the following is true when comparing the hydrolysis of esters in acidic solution with the hydrolysis of esters in basic solution. both the inorganic and organic products are the same in both cases
The root-mean-square (rms) speed of a sample of molecules was found to be 1.8*10^3 m/s at 25.0 degrees C. After heating, the rms speed was found to be 4.6*10^3 m/s. What was the temperature of the sample after heating
41.89 mL of NaOH were required to completely titrate 25.00 mL of a weak monoprotic acid. After 11.90 mL of sodium hydroxide had been added to the solution, the pH of the solution was 6.81. Calculate K_a_ and pK_a_ for this weak acid.
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