" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
ms=70g
mr=220
cp=7000/220=31,8%
16 cp=2000/50=40%
17 cp= 2450/124,5=19,7%
18
cm=0,6/5=0,12 mol/dm3
19
1,5g-x
63-1mol
x=0,02
cm=0,02/0,2=0,12M
20
n=0,3*0,2=0,06
0,06-xg
1-85
x=5,1
21 cm=0,5/5=0,1M
80g-x moli
142-1
x=0,5
22
m=d*v
v=750/1,05
v=714cm3
n=0,714*0,5=0,35mola
0,35-x g
1-53,5
x=18,725
23
cm=?
cm=cp*d/100M
cp=120*100/620=19,3%
cm=19,3*1,1/16100=0,0013M
24
70-170
x=200
x=82,3g
25
140-240
x=300
x=175g
26
8,88-100
cp=888/108,88=8,15%
27 n=0,0074
cm=0,0074/0,47=0,15M
28
n=0,3*0,45
n=0,135
v=?
v=0,135/0,4
v=0,33dm3
29
ms=60g
cp=20%
mr=100*60/20=300g wody
30
cp=15%
ms=40 + x
mr=500+x
15%=40+x)*100/500+x
7500+15x=4000+100x
x=41,2g
Licze na naj :D