¿Cuál será la fracción molar del metanol (MM CH3OH = 32 g/mol) en una disolución compuesta por 32gramos de metanol, 23 gramos de etanol (MM CH3CH2OH = 46 g/mol) y 45 gramos de agua (MM H2O = 18 g/mol)?

the increase of protons   hope this

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.