An analytical Chernist is titrating 231.6 mL of a 0.7400 M solution of dimethylamine ((CH3)2NH) with a 0.2200 M solution of HNO3. The pKb, of dimethylamine is 3.27. Calculate the pH of the base solution after the chemist has added 921.1 mL of the HNO3, solution to it.
Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of HNO3, solution added.
Round your answer to 2 decimal places.
pH ?

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.