1) В исходном растворе массой 155 г содержится 55 г сульфата меди и 100 г воды.
2) Если после охлаждения в осадок выпало 53,6 г сульфата меди, то в растворе её осталось:
m(Cu(SO₄)₂) = 55 - 53,6 = 1,4 г
3) Но с выпадением осадка уменьшилась и масса раствора и она стала:
m(p-p) = 155 - 53,6 = 101,4 г
4) Массовую долю растворенного вещества в растворе вычисляют по формуле:
ω = m(Cu(SO₄)₂) / m(p-p) = 1,4/101,4 = 0,0138
Данная концентрация выражена в долях единицы. Чтобы выразить её в процентах, нужно данное значение умножить на 100%.
Значит, концентрация равна 1,38%
ответ: 1,38%
Дур*
SPAM
SPA M
SP A M
S P A M
S P AM
S PAM
SP AM
MSPA
AMSP
PAMS
SAM
AM
AMP
AM SP
ASP
SP
SPM
Must Waste More Time...
1) В исходном растворе массой 155 г содержится 55 г сульфата меди и 100 г воды.
2) Если после охлаждения в осадок выпало 53,6 г сульфата меди, то в растворе её осталось:
m(Cu(SO₄)₂) = 55 - 53,6 = 1,4 г
3) Но с выпадением осадка уменьшилась и масса раствора и она стала:
m(p-p) = 155 - 53,6 = 101,4 г
4) Массовую долю растворенного вещества в растворе вычисляют по формуле:
ω = m(Cu(SO₄)₂) / m(p-p) = 1,4/101,4 = 0,0138
Данная концентрация выражена в долях единицы. Чтобы выразить её в процентах, нужно данное значение умножить на 100%.
Значит, концентрация равна 1,38%
ответ: 1,38%
Дур*
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPA M
SPA M
SPA M
SPA M
SP A M
SP A M
SP A M
SP A M
S P A M
S P A M
S P A M
S P A M
S P A M
S P A M
S P A M
S P A M
S P A M
S P A M
S P A M
S P AM
S P AM
S P AM
S P AM
S PAM
S PAM
S PAM
S PAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
S PAM
S PAM
S PAM
S PAM
S PAM
S P AM
S P AM
S P AM
S P AM
SP AM
SP A M
SP A M
SP A M
SP A M
SPA M
SPA M
SPA M
SPA M
SPA M
SPAM
SPAM
MSPA
AMSP
PAMS
SPAM
MSPA
AMSP
PAMS
SPAM
MSPA
AMSP
PAMS
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SPAM
SAM
AM
AMP
AMSP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AMSP
ASP
SP
SPM
SPAM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SPAM
SAM
AM
AMP
AMSP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AMSP
ASP
SP
SPM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
Must Waste More Time...
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPA M
SPA M
SPA M
SPA M
SP A M
SP A M
SP A M
SP A M
S P A M
S P A M
S P A M
S P A M
S P A M
S P A M
S P A M
S P A M
S P A M
S P A M
S P A M
S P AM
S P AM
S P AM
S P AM
S PAM
S PAM
S PAM
S PAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
S P AM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
S PAM
S PAM
S PAM
S PAM
S PAM
S P AM
S P AM
S P AM
S P AM
SP AM
SP A M
SP A M
SP A M
SP A M
SPA M
SPA M
SPA M
SPA M
SPA M
SPAM
SPAM
MSPA
AMSP
PAMS
SPAM
MSPA
AMSP
PAMS
SPAM
MSPA
AMSP
PAMS
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SPAM
SAM
AM
AMP
AMSP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AMSP
ASP
SP
SPM
SPAM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SP AM
SPAM
SAM
AM
AMP
AMSP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AM SP
AMSP
ASP
SP
SPM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
SPAM
Must Waste More Time...