A student synthesized a coordination compound, Ni(NH3)nCl2, using the procedures given in the laboratory class. The student added 32.0 mL of 0.50 M HCl solution to an aqueous solution containing 0.2346 g of Ni(NH3)nCl2. The excess HCl required 25.60 mL of 0.1000 M NaOH solution for complete titration. How many moles of NH3 were present in the student's sample

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.