methyla 16.6 Calculate the OH concentration and pH of a 0.0025 M the hydronium-ion, CN¯, and HCN concentrations. 16.83 F aque us solution of sodium cyanide, NaCN. Finally, obtain to 2.0 a pH e additic 16.67 Calculate the concentration of pyridine, C;H;N, in a solution that is 0.15 M pyridinium bromide, C;H;NHB.. What is the pH of the solution? 16.68 What is the pH of a 0.30 M solution of methylam- monium chloride, CH;NH;Cl? What is the concentration of methylamine in the solution? 16.84 be ado buffer additi Titrat 16.85 Common-lon Effect 0.10 16.69 Calculate the degree of ionization of a 0.75 M HF (hydrofluoric acid); b the same solution that is also 16.86 0.10 0.12 M HCI. 16.70 Calculate the degree of ionization of a 0.22 M HCHO, (formic acid); the same solution that is also 16.8 ter t with 0.15 M HC1. whe 16.71 What is the pH of a solution that is 0.600 M HCHO, (formic acid) and 0.400 M NaCHO,? 16.72 What is the pH of a solution that is 0.20 M KOCN and 0.10 M HOCN (cyanic acid)? 16.8 wate ed v whe 16.73 What is the pH of a solution that is 0.10 M CH;NH, (methylamine) and 0.15 M CH;NH;CI (methylammonium chloride)? 16.8 of wit 16.5 16.74 What is the pH of a solution that is 0.15 M C,H;NH, (ethylamine) and 0.10 M C,H5NH;Br (ethylammonium bromide)? of 16. Buffers is Ca 16.75 A buffer is prepared by adding 39.8 mL of 0.75 M NaF to 38.9 mL of 0.28 M HF. What is the pH of the final the Но solution? 30. 16.76 A buffer is pronorod bu adding 115 mL, of 0.30 M

What is the concentration of an HNO3 solution in percent by mass that was determined to have a concentration of 0.669 M in a titration experiment? Assume a density of 1.00 g/mL. Your Answer: Answer units Previous Page Next Page Page 4 of 15

In general, what is the temperature of refluxing reaction?

6. A nucleotide is the basic building block of nucleic acids. RNA and DNA are polymers made of long chains of nucleotides. A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base (the red nitrogen atom is connected to a sugar molecules). NH₂ adenine (A) HN. NH₂ NH (a) paired bases by hydrogen bonding. NH₂ HN HN cytosine (C) guanine (G) thymine (T) uracil (U) Which bases will make hydrogen-bonds together within an DNA? Draw structures of the (b) Which bases will make hydrogen-bonds together within an RNA? Draw structures of the paired bases by hydrogen bonding.

Could I get a paper version of the solution with better steps?

What is value for x in the equation below? In(3.27x) = 0.72(0.39-0.79) Note: Logarithms and exponentials will feature prominently throughout the course and understanding how to solve these types of equations (and knowing how to use your calculator) is essential. Note: In this course "log" refers to the base-10 logarithm and "In" refers to the base-e logarithm. Remember: if you want to express an answer in scientific notation, use the letter "E". For example "4.32 x 104" should be entered as "4.32E4". Answer:

What is the acid and conjugated acid in this reaction H2SO4 + NH3 → HSO4ˉ + NH4⁺?

How many milliter of 0.200M NaOH will be required to neutralize 75.0mL of 0.215M H2SO4? a.161 b.323 c.323 d.430

Please help with the following

. Give an example of a Lewis acid-base pair and a frustrated Lewis acid-base pair. What is the difference between these two systems? What is the mechanism for the reaction with H2?