Железа (II) оксид количеством вещества 0, 5 моль прореагировал с соляной кислотой. Количество вещества соляной кислоты потратилась при этом?

Дано: y (FeO) = 0,5 моль. Найти: y ( HCl ) -?
Решение.
Записываем уравнение реакции:
   0,5 моль х моль
     FeO + 2HCl = FeCl 2 + H 2 O   
   1 моль 2 моль
Над формулами веществ записываем данные, имеющиеся по условию задачи.
Мольные соотношения веществ  показывают  коэффициенты уравнения. Поскольку у HCl является коэффициент 2, то соляной кислоты вступило в реакцию 2 моль, а железа (II) оксида лишь 1 моль. Указанные количества веществ подписываем под формулами веществ в уравнении реакции.
Составляем пропорцию и решаем ее.
0,5моль / 1 моль = х моль / 2моль, отсюда х = 0,5моль • 2моль / 1 моль = 1 моль.
Ответ:  y ( HCl ) = 1 моль.

it   was   july   16,   2008   and   i   was   at   city   hall   to   do   something   thatwould change my life forever. i went to room 302 and got my workingcard.   i   thought   i   was   independent   and   ready   to   get   a   job.

first i filled in applications. i put in over 100 applications at restau-rants, clothing stores, and hotels. i kept looking for a job, and i decidedto   go   to   the   mall.   i   was   interested   in   getting   a   place   in   one   restaurantbecause my good school friend worked there, and he told me they neededpeople.   i   thought   it   might   turn   out   to   be   successful.

one   day,   when   i   came   home   and   turned   on   the   answering   machine,there was a message on it. it was a job! a lady from a supermarket calledme   for   an   interview   on   tuesday.   i   was   very   excited.   this   was   my   first  interview.   on   sunday   i   got   up   early,   my   mom   and   i   went   shopping   fora dress. i put on this dress on tuesday. the lady asked me a lot of questi-ons,   but   i   thought   over   the   answers   the   day   before.

i   didn’t   get   the   job,   but   i   found   out   that   you   can’t   get   a   job   easily.it’s   very   hard   work.

it   was   july   16,   2008   and   i   was   at   city   hall   to   do   something   that would change my life forever. i went to room 302 and got my workingcard.   i   thought   i   was   independent   and   ready   to   get   a   job.

first i filled in applications. i put in over 100 applications at restau-rants, clothing stores, and hotels. i kept looking for a job, and i decidedto   go   to   the   mall.   i   was   interested   in   getting   a   place   in   one   restaurantbecause my good school friend worked there, and he told me they neededpeople.   i   thought   it   might   turn   out   to   be   successful.

one   day,   when   i   came   home   and   turned   on   the   answering   machine,there was a message on it. it was a job! a lady from a supermarket calledme   for   an   interview   on   tuesday.   i   was   very   excited.   this   was   my   first  interview.   on   sunday   i   got   up   early,   my   mom   and   i   went   shopping   fora dress. i put on this dress on tuesday. the lady asked me a lot of questi-ons,   but   i   thought   over   the   answers   the   day   before.

i   didn’t   get   the   job,   but   i   found   out   that   you   can’t   get   a   job   easily.it’s   very   hard   work.