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2.10 L of a buffer solution that is 0.360 M in NH3 and 0.430 M in NH4Cl are diluted to 4.30 L with distilled water. What is the pH of the buffer? Kb of NH3 = 1.8 10-5.
Determine the acid dissociation contant for a 0.10M acetic acid solution that has a pH of 2.87. Acetic acid is weak monoprotic acid.
Solid aluminum metal and diatomic chlorine gas react spontaneously to form a solid product. Give the balanced chemical equation (including phases) that describes this reaction.
Compute the momentum of a water molecule at normal conditions, assuming its kinetic energy
The half life for the radioactive decay (first order process) of 32P is 14.2 days. How many days would be required for a sample of radiopharmaceutical containing 32P to decrease to 20% of its initial activity
How many types of nonequivalent protons does the following compound contain
The student determined that the average concentration of HCl was 0.188 M. What volume of 0.0875 M NaOH would be needed to comletely react with 15.0 mL of this acid
The thermostat in a refrigeraor filled with cans of soft drinks malfunctions and the temperature drops to below 0 degree Celsius. The contents of the cans of diet sodas freeze, rupturing many of the cans.
(a) What conditions are represented by the abbreviation STP. Temperature °C Pressure atm (b) What is the molar volume of an ideal gas at STP
compute the thermal-equilibrium values of hole and electron concentrations while considering a homogeneous gallium
1.00 mol of phosphorus reacted with excess fluorine: P4 + 6F2 -> 4PF3 Calculate the number of moles of PF3 produced, assuming the reaction went to completion
Using the intermolecular bonding between H2O moleculesin it's two condensed phases (solid ice versus liquid water), explain the observed phenomenon that
When 1.150 grams of an unknown nonelectrolyte dissolves in 10.0 grams of water, the solution freezes at -2.16°C. What is the molecular weight of the unknown compound? Kf for water = 1.86°C/m.
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