Stężenia2
Quiz
•
Chemistry
•
9th Grade
•
Practice Problem
•
Hard
Danuta Tokarczyk
Used 76+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Oblicz stężenie procentowe 300 g roztworu 30%, jeżeli dosypiemy 20 g soli
36%
34,38%
28,5%
30,74%
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Oblicz stężenie procentowe 150 g roztworu 40% jeżeli wykrystalizuje 10 g soli i dolejemy 20 g wody
25,55%
35,56%
31,25%
16%
3.
FILL IN THE BLANK QUESTION
3 mins • 1 pt
Ile moli kwasu azotowego (III) znajduje się w 300 cm3 20% roztworu o gęstości 1,4 g/cm3
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Oblicz stężenie molowe wodorotlenku wapnia o gęstości 2,02 g/cm3 i stężeniu procentowym 50%
13,65 mol/dm3
18,76 mol/dm3
14 g/mol
25,55 mol/dm3
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Oblicz ile gramów NaHSO4 znajduje się w 150 g 1,7 molowego roztworu o gęstości 1,25 g/cm3
36,72 g
86,45 g
21,5 g
15,55 g
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Oblicz stężenie molowe 300 cm3 dwu molowego wodorotlenku glinu
4,02 mol/dm3
3,25 mol/dm3
6,67 mol/dm3
0,006 mol/dm3
7.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Co to jest stężenie procentowe ( 2)
jest to liczba gramów substancji rozpuszczonej w 100 g roztworu
jest to wyrażony w procentach stosunek masy substancji rozpuszczonej do masy roztworu
jest to liczba gram substancji rozpuszczona w 100 g rozpuszczalnika
jest to 100 gramów substancji rozpuszczona w pewnej liczbie gram rozpuszczalnika
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