
Roztwory
Quiz
•
Chemistry
•
9th Grade
•
Practice Problem
•
Medium
Elżbieta Świerkocka
Used 54+ times
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13 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Stężenie procentowe ma wzór:
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Określenie "roztwór o stężeniu 25%" oznacza, że 25 g substancji przypada na
100 g wody
100 g roztworu
1 dm3 wody
1 dm3 roztworu
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Stężenie molowe ma jednostkę:
/ mol
mol /
%
g/100g wody
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Które czynności doprowadzą do zwiększenia stężenia molowego?
odparowanie wody
odlanie roztworu
dolanie wody
dosypanie substancji
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Chlorek potasu w 70°C posiada rozpuszczalność 50g/100g wody. Stężenie procentowe roztworu wynosi:
50%
33,3%
25%
11,1%
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
20g chlorku sodu rozpuszczono w 50g wody. Oblicz stężenie procentowe tego roztworu.
28,6%
28,6mol/
40%
40 mol/
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Ile soli rozpuszczono w 250 g 30% roztworu?
75 g
12 g
25 g
60 g
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