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Problem- What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M methylamine, CH3NH2, with 25.00 mL of 0.10 M methylammonium chloride, CH3NH3Cl? Assume that the volume of the solutions are additive and that Kb = 3.70 × 10-4 for methylamine.
Answer showing how to make each solution will get rated
How much heat is evolved when 1241 g of water condenses to a liquid at 100.°C?
Calculate the [SCN-] solution A, where 5.7 mL of 2.910?3 M NaSCN is diluted to 44.0 mL with 0.1 M Fe(NO3)3. Next calculate the [FeSCN2+] in the solutions prepared by diluting volumes of solution A with 0.1 M Fe(NO3)3 to a final volume of 1.0101 mL..
calibration data for a f-ion-selective electrode using kf standard solutions prepared in buffer of 0.5 m ionic strength
A certain sample of the mineral galena weighs 12.4 and has a volume of 1.64 mL. What is the density of galena?
A solution of NH4Cl is prepared and its molarity is 1.00 x 10-3; what is the pH of this solution.
The solubility of caffeine in water is 2.2mg/mL at 25 degrees celsius and 670 mg/mL at 100 degrees celsius. How many mL of boiling water would it take to dissolve 23g of caffeine
Calculate the pH of the solutions formed by dissolving 1.0g of each of the following substances in 500mL of solution
Problem- Use the tabulated half-cell potentials to calculate the equilibrium constant (K) for the following balanced redox reaction at 25°C. 3 I2(s) + 2 Fe(s) -->2 Fe3+(aq) + 6 I-(aq)
Silver chloride crystallizes with the sodium chloride (rock salt) structure. The length of a unit cell edge is 555 pm. What is the density of AgCl? Show all works.
a voltaic cell consists of mnmn2 and cdcd2 half-cells containing equal volumes of solutions with the following initial
10.0 mL of a 0.30 M sodium phosphate solution reacts with 20.0 mL of a 0.20 M lead(II) nitrate solution (assume no volume change)What mass of Pb3(PO4)2 will form
Problem- What is the chemical equation for the above. Is there a reaction. If so, what's the balanced 1) molecular, 2) ionic, 3) net ionic equation. What are the states in the net ionic equation
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