Proszę o rozwiązanie przynajmniej 3 z 5 zadań.
Zadania w załączniku.
1.
mr-60g
cp=12%
ms=mr*cp/100
ms7,2g
mw=mr-ms
mw=52,8g
2.
ms=35g
mw=300g
mr=335g
cp=ms*100/mr
cp=10,45%
cm=cp*d/M*100
cm=10,45*1,3*1000/58,5*100
cm=2,3mol/dm3
3.
n1=cm*v
n1=0,6*0,7
n1=0,42mola
n2=cm*v
n2=0,4*0,65
n2=0,26mola
cm=n1+n2/vc
cm=0,42+0,26/0,7+0,65
cm=0,5mol/dm3
4.
25% x 440
x%
0% 25-x 50
490g---------- x + 25-x
50g----------- 25-x
12250-490x=1250
490x=11000
x=22.4%
5.
v=0,65dm3
cm=0,8
n=cm*v
n=0,52mola
m=n*M
m=0,52*58,5
m=30,42g
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
1.
mr-60g
cp=12%
ms=mr*cp/100
ms7,2g
mw=mr-ms
mw=52,8g
2.
ms=35g
mw=300g
mr=335g
cp=ms*100/mr
cp=10,45%
cm=cp*d/M*100
cm=10,45*1,3*1000/58,5*100
cm=2,3mol/dm3
3.
n1=cm*v
n1=0,6*0,7
n1=0,42mola
n2=cm*v
n2=0,4*0,65
n2=0,26mola
cm=n1+n2/vc
cm=0,42+0,26/0,7+0,65
cm=0,5mol/dm3
4.
25% x 440
x%
0% 25-x 50
490g---------- x + 25-x
50g----------- 25-x
12250-490x=1250
490x=11000
x=22.4%
5.
v=0,65dm3
cm=0,8
n=cm*v
n=0,52mola
m=n*M
m=0,52*58,5
m=30,42g