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Compute the pH at the equivalence point for the titration of 0.130 M methylamine (CH3NH2) with 0.130 M HCl. The Kb of methylamine is 5.0 x10-4
Compare the electrical conductibities of Sodium Chloride (NaCl), ammonium nitrate (NH4NO3), calcium sulfate (CaSO4), and distilled water. Account for any differences noted in the electrical conductivities of these compounds.
The second is defined as the time it takes for 9,192,631,770 wavelenght of a certain transition of the cesium-133 atom to pass a fixed point.
how many grams of bromine are required to react with 37.4 grams of aluminum chloride?
What volume will 1.56 liters of a gas at 27°C and 745 mmHg of pressure occupy at 100°C and 700 mmHg of pressure?
Now take another 37 mL of the 0.50 M pH 6.83 buffer and add 1.3 mL of 1.00 M NaOH. Using steps similar to those above, calculate the new pH of the solution.
A total of 2.00 \rm mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 106 g of solution. The reaction caused the temperature of the solution to rise from 21.0 to 24.7 ^\circ \rm C. What is the enthalpy..
A solution contains 0.200 moles of HCOOH and 0.100 moles of HCOONa in a 200 mL volume is found to have a pH of 3.44. What is the Ka of HCOOH
How to to use low resolution absorption spectra to obtain values proportional to the true absorbance
The maximum temperature attainable in the crucible on strong heating with a Bunsen burner is approximately 800°C. Can the magnesium evaporate under the conditions of this experiment? Why or why not?
Write a partial decay series for {\rm Th}-232 undergoing the following sequential decays: \alpha , \beta , \beta , \alpha . Part A \alpha -decay Express your answer as a nuclear equation.
Calculate the thermal energy (in J) needed to increase the temperature of a 2.4 kg piece of iron from 29.9o C to 51.2o C. The specific heat of iron is 0.449 J/g*Co. Type your answer in scientific notation using the format 8.050e-3 for 8.050 × 10-3.
How many grams of Cu(OH)2 can be produced from the reaction of 0.500g Cu with 30.0 mL of 3.0M NaOH? what is the limiting reagent?
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